Is there a kind of relay that only consumes power when switching? Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)Switching QuestionRelay switching for audioA relay that behaves like a simple one but doesn't continuously use power?Latching relay - Remember state after power failurename for relay that holds state and only consumes power when toggling statesRC relay range drops dramatically when under load?Need a Switch that Stays Off Once Power is OutRelay sticking when switching mains for LED power supplyIdeal Switching Signal for a Featherwing power Relay boardRelay Sometimes Not Switching
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Is there a kind of relay that only consumes power when switching?
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)Switching QuestionRelay switching for audioA relay that behaves like a simple one but doesn't continuously use power?Latching relay - Remember state after power failurename for relay that holds state and only consumes power when toggling statesRC relay range drops dramatically when under load?Need a Switch that Stays Off Once Power is OutRelay sticking when switching mains for LED power supplyIdeal Switching Signal for a Featherwing power Relay boardRelay Sometimes Not Switching
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$begingroup$
The relay must stay in its state. When an electrical impulse is sent to it, it should switch its state and should maintain its status.
So I am really curious about it. Is there such a thing for saving lots of power?
relay
New contributor
$endgroup$
add a comment |
$begingroup$
The relay must stay in its state. When an electrical impulse is sent to it, it should switch its state and should maintain its status.
So I am really curious about it. Is there such a thing for saving lots of power?
relay
New contributor
$endgroup$
add a comment |
$begingroup$
The relay must stay in its state. When an electrical impulse is sent to it, it should switch its state and should maintain its status.
So I am really curious about it. Is there such a thing for saving lots of power?
relay
New contributor
$endgroup$
The relay must stay in its state. When an electrical impulse is sent to it, it should switch its state and should maintain its status.
So I am really curious about it. Is there such a thing for saving lots of power?
relay
relay
New contributor
New contributor
edited 1 hour ago
Peter Mortensen
1,60031422
1,60031422
New contributor
asked yesterday
Barış Doğa YavaşBarış Doğa Yavaş
4612
4612
New contributor
New contributor
add a comment |
add a comment |
6 Answers
6
active
oldest
votes
$begingroup$
Yes, they go by various names such as a bistable relay, latching relay, or impulse relay. Common in small (telecom style 2A or less) and also some power relays have this function.
There are various methods of actuating them, the small ones typically have either two coils (pulse one coil for 'on', pulse the other for 'off') or single coil (reverse polarity pulses for on vs. off).
Some of the power ones are alternating (pulse on, pulse off). One application of the high-power relays is for electrical metering where the power can be remotely switched off in case of bill non-payment by the customer.
$endgroup$
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button using relay's second port(I don't know how its called?).
$endgroup$
– Barış Doğa Yavaş
yesterday
4
$begingroup$
You control the coil(s) and give it a brief pulse to put it in the desired state. That is typically done with electronics.
$endgroup$
– Spehro Pefhany
yesterday
$begingroup$
latching power relays are also used in ripple control systems.
$endgroup$
– Jasen
yesterday
add a comment |
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button ...
You are getting confused with a relay circuit that electrically latches the relay on. A latching relay is bi-stable. It has two stable positions. It uses two coils to switch it - or one but you have to reverse the polarity.
Figure 1. A latching relay will stay in the last energised position when power is removed. Source: Homofaciens.
$endgroup$
$begingroup$
usually the rocker is magnetused middle to both ends (or the fulcrum is magnetised top to bottom)
$endgroup$
– Jasen
yesterday
$begingroup$
Note that there are latching relays with one coil, where you reverse the coil drive to toggle the states.
$endgroup$
– Connor Wolf
yesterday
$begingroup$
reversing the polarity will not help, unless they use diodes to control 2 coils with 2 wires. generally relays are made to be polarity agnostic, so they can be sold to use with AC.
$endgroup$
– Harper
7 hours ago
$begingroup$
@Harper Some of them are, some are not. The more common type of latching relay is called a single-coil latching relay, and they are polarity sensitive.
$endgroup$
– Hearth
7 hours ago
$begingroup$
@Harper: "generally relays are made to be polarity agnostic, ..." Yes, so they can work with DC on either polarity. "... so they can be sold to use with AC ..." I have seen this very rarely. The AC types usually rely on their inductance to limit current and on DC the current would be limited only by the inductance. I seem to remember a particular model rated for 120 V AC / 24 V DC which seemed interesting.
$endgroup$
– Transistor
7 hours ago
|
show 1 more comment
$begingroup$
Example of a mechanical latching relays can be found in early telephone exchanges.
The stepping relay, or Strowger switch, was used to establish a switched circuit through a telephony exchange. Power was used to advance the relay for each click of the dial pulse, but once the digit was complete, the switch held its position.
More advanced exchanges used crossbar switches which connected more points in less space. These were also latching and did not require power to maintain each specific connection.
$endgroup$
add a comment |
$begingroup$
In a way, each cell in non-volatile memory (NVRAM) is a latching relay. Each cell stores its state when power is removed and uses no power to remain as it is. Only when the state is changed does the "bit" use power.
In many implementations of NVRAM, the state is stored as an island of electrical charge stored within an insulating framework. The stored charge influences the ability of current to flow through an adjacent semiconductor channel.
$endgroup$
add a comment |
$begingroup$
If you want a readily available example, GE makes a line of latching relays called RR7. They are used for commercial lighting. They work exactly as you wish, and run on 24 VAC or DC or voltages in that ballpark.
$endgroup$
add a comment |
$begingroup$
Also the Half-Bridge FET Relay only consumes power during the switching transition which is proportional to the Q charge on the Gate input and Drain output during switching. However, in normal operation, they are used to also vary voltage with PWM which draws switching power at a higher rate. But the high side of the dual half-bridge or "full-H bridge" bridge is used to change directions of current after flow has stopped with very little power.
However, IGBT's with FET input are more suited to AC line voltage and require costly protection for line faults or surges.
Similarily , the Thyristor family of parts only need a pulse to latch-on for the next cycle.
$endgroup$
add a comment |
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6 Answers
6
active
oldest
votes
6 Answers
6
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Yes, they go by various names such as a bistable relay, latching relay, or impulse relay. Common in small (telecom style 2A or less) and also some power relays have this function.
There are various methods of actuating them, the small ones typically have either two coils (pulse one coil for 'on', pulse the other for 'off') or single coil (reverse polarity pulses for on vs. off).
Some of the power ones are alternating (pulse on, pulse off). One application of the high-power relays is for electrical metering where the power can be remotely switched off in case of bill non-payment by the customer.
$endgroup$
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button using relay's second port(I don't know how its called?).
$endgroup$
– Barış Doğa Yavaş
yesterday
4
$begingroup$
You control the coil(s) and give it a brief pulse to put it in the desired state. That is typically done with electronics.
$endgroup$
– Spehro Pefhany
yesterday
$begingroup$
latching power relays are also used in ripple control systems.
$endgroup$
– Jasen
yesterday
add a comment |
$begingroup$
Yes, they go by various names such as a bistable relay, latching relay, or impulse relay. Common in small (telecom style 2A or less) and also some power relays have this function.
There are various methods of actuating them, the small ones typically have either two coils (pulse one coil for 'on', pulse the other for 'off') or single coil (reverse polarity pulses for on vs. off).
Some of the power ones are alternating (pulse on, pulse off). One application of the high-power relays is for electrical metering where the power can be remotely switched off in case of bill non-payment by the customer.
$endgroup$
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button using relay's second port(I don't know how its called?).
$endgroup$
– Barış Doğa Yavaş
yesterday
4
$begingroup$
You control the coil(s) and give it a brief pulse to put it in the desired state. That is typically done with electronics.
$endgroup$
– Spehro Pefhany
yesterday
$begingroup$
latching power relays are also used in ripple control systems.
$endgroup$
– Jasen
yesterday
add a comment |
$begingroup$
Yes, they go by various names such as a bistable relay, latching relay, or impulse relay. Common in small (telecom style 2A or less) and also some power relays have this function.
There are various methods of actuating them, the small ones typically have either two coils (pulse one coil for 'on', pulse the other for 'off') or single coil (reverse polarity pulses for on vs. off).
Some of the power ones are alternating (pulse on, pulse off). One application of the high-power relays is for electrical metering where the power can be remotely switched off in case of bill non-payment by the customer.
$endgroup$
Yes, they go by various names such as a bistable relay, latching relay, or impulse relay. Common in small (telecom style 2A or less) and also some power relays have this function.
There are various methods of actuating them, the small ones typically have either two coils (pulse one coil for 'on', pulse the other for 'off') or single coil (reverse polarity pulses for on vs. off).
Some of the power ones are alternating (pulse on, pulse off). One application of the high-power relays is for electrical metering where the power can be remotely switched off in case of bill non-payment by the customer.
edited yesterday
duskwuff
18.2k32853
18.2k32853
answered yesterday
Spehro PefhanySpehro Pefhany
214k5163436
214k5163436
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button using relay's second port(I don't know how its called?).
$endgroup$
– Barış Doğa Yavaş
yesterday
4
$begingroup$
You control the coil(s) and give it a brief pulse to put it in the desired state. That is typically done with electronics.
$endgroup$
– Spehro Pefhany
yesterday
$begingroup$
latching power relays are also used in ripple control systems.
$endgroup$
– Jasen
yesterday
add a comment |
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button using relay's second port(I don't know how its called?).
$endgroup$
– Barış Doğa Yavaş
yesterday
4
$begingroup$
You control the coil(s) and give it a brief pulse to put it in the desired state. That is typically done with electronics.
$endgroup$
– Spehro Pefhany
yesterday
$begingroup$
latching power relays are also used in ripple control systems.
$endgroup$
– Jasen
yesterday
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button using relay's second port(I don't know how its called?).
$endgroup$
– Barış Doğa Yavaş
yesterday
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button using relay's second port(I don't know how its called?).
$endgroup$
– Barış Doğa Yavaş
yesterday
4
4
$begingroup$
You control the coil(s) and give it a brief pulse to put it in the desired state. That is typically done with electronics.
$endgroup$
– Spehro Pefhany
yesterday
$begingroup$
You control the coil(s) and give it a brief pulse to put it in the desired state. That is typically done with electronics.
$endgroup$
– Spehro Pefhany
yesterday
$begingroup$
latching power relays are also used in ripple control systems.
$endgroup$
– Jasen
yesterday
$begingroup$
latching power relays are also used in ripple control systems.
$endgroup$
– Jasen
yesterday
add a comment |
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button ...
You are getting confused with a relay circuit that electrically latches the relay on. A latching relay is bi-stable. It has two stable positions. It uses two coils to switch it - or one but you have to reverse the polarity.
Figure 1. A latching relay will stay in the last energised position when power is removed. Source: Homofaciens.
$endgroup$
$begingroup$
usually the rocker is magnetused middle to both ends (or the fulcrum is magnetised top to bottom)
$endgroup$
– Jasen
yesterday
$begingroup$
Note that there are latching relays with one coil, where you reverse the coil drive to toggle the states.
$endgroup$
– Connor Wolf
yesterday
$begingroup$
reversing the polarity will not help, unless they use diodes to control 2 coils with 2 wires. generally relays are made to be polarity agnostic, so they can be sold to use with AC.
$endgroup$
– Harper
7 hours ago
$begingroup$
@Harper Some of them are, some are not. The more common type of latching relay is called a single-coil latching relay, and they are polarity sensitive.
$endgroup$
– Hearth
7 hours ago
$begingroup$
@Harper: "generally relays are made to be polarity agnostic, ..." Yes, so they can work with DC on either polarity. "... so they can be sold to use with AC ..." I have seen this very rarely. The AC types usually rely on their inductance to limit current and on DC the current would be limited only by the inductance. I seem to remember a particular model rated for 120 V AC / 24 V DC which seemed interesting.
$endgroup$
– Transistor
7 hours ago
|
show 1 more comment
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button ...
You are getting confused with a relay circuit that electrically latches the relay on. A latching relay is bi-stable. It has two stable positions. It uses two coils to switch it - or one but you have to reverse the polarity.
Figure 1. A latching relay will stay in the last energised position when power is removed. Source: Homofaciens.
$endgroup$
$begingroup$
usually the rocker is magnetused middle to both ends (or the fulcrum is magnetised top to bottom)
$endgroup$
– Jasen
yesterday
$begingroup$
Note that there are latching relays with one coil, where you reverse the coil drive to toggle the states.
$endgroup$
– Connor Wolf
yesterday
$begingroup$
reversing the polarity will not help, unless they use diodes to control 2 coils with 2 wires. generally relays are made to be polarity agnostic, so they can be sold to use with AC.
$endgroup$
– Harper
7 hours ago
$begingroup$
@Harper Some of them are, some are not. The more common type of latching relay is called a single-coil latching relay, and they are polarity sensitive.
$endgroup$
– Hearth
7 hours ago
$begingroup$
@Harper: "generally relays are made to be polarity agnostic, ..." Yes, so they can work with DC on either polarity. "... so they can be sold to use with AC ..." I have seen this very rarely. The AC types usually rely on their inductance to limit current and on DC the current would be limited only by the inductance. I seem to remember a particular model rated for 120 V AC / 24 V DC which seemed interesting.
$endgroup$
– Transistor
7 hours ago
|
show 1 more comment
$begingroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button ...
You are getting confused with a relay circuit that electrically latches the relay on. A latching relay is bi-stable. It has two stable positions. It uses two coils to switch it - or one but you have to reverse the polarity.
Figure 1. A latching relay will stay in the last energised position when power is removed. Source: Homofaciens.
$endgroup$
But latching relays continues to draw energy for coil inside of it after one o hit the button ...
You are getting confused with a relay circuit that electrically latches the relay on. A latching relay is bi-stable. It has two stable positions. It uses two coils to switch it - or one but you have to reverse the polarity.
Figure 1. A latching relay will stay in the last energised position when power is removed. Source: Homofaciens.
answered yesterday
TransistorTransistor
89k785191
89k785191
$begingroup$
usually the rocker is magnetused middle to both ends (or the fulcrum is magnetised top to bottom)
$endgroup$
– Jasen
yesterday
$begingroup$
Note that there are latching relays with one coil, where you reverse the coil drive to toggle the states.
$endgroup$
– Connor Wolf
yesterday
$begingroup$
reversing the polarity will not help, unless they use diodes to control 2 coils with 2 wires. generally relays are made to be polarity agnostic, so they can be sold to use with AC.
$endgroup$
– Harper
7 hours ago
$begingroup$
@Harper Some of them are, some are not. The more common type of latching relay is called a single-coil latching relay, and they are polarity sensitive.
$endgroup$
– Hearth
7 hours ago
$begingroup$
@Harper: "generally relays are made to be polarity agnostic, ..." Yes, so they can work with DC on either polarity. "... so they can be sold to use with AC ..." I have seen this very rarely. The AC types usually rely on their inductance to limit current and on DC the current would be limited only by the inductance. I seem to remember a particular model rated for 120 V AC / 24 V DC which seemed interesting.
$endgroup$
– Transistor
7 hours ago
|
show 1 more comment
$begingroup$
usually the rocker is magnetused middle to both ends (or the fulcrum is magnetised top to bottom)
$endgroup$
– Jasen
yesterday
$begingroup$
Note that there are latching relays with one coil, where you reverse the coil drive to toggle the states.
$endgroup$
– Connor Wolf
yesterday
$begingroup$
reversing the polarity will not help, unless they use diodes to control 2 coils with 2 wires. generally relays are made to be polarity agnostic, so they can be sold to use with AC.
$endgroup$
– Harper
7 hours ago
$begingroup$
@Harper Some of them are, some are not. The more common type of latching relay is called a single-coil latching relay, and they are polarity sensitive.
$endgroup$
– Hearth
7 hours ago
$begingroup$
@Harper: "generally relays are made to be polarity agnostic, ..." Yes, so they can work with DC on either polarity. "... so they can be sold to use with AC ..." I have seen this very rarely. The AC types usually rely on their inductance to limit current and on DC the current would be limited only by the inductance. I seem to remember a particular model rated for 120 V AC / 24 V DC which seemed interesting.
$endgroup$
– Transistor
7 hours ago
$begingroup$
usually the rocker is magnetused middle to both ends (or the fulcrum is magnetised top to bottom)
$endgroup$
– Jasen
yesterday
$begingroup$
usually the rocker is magnetused middle to both ends (or the fulcrum is magnetised top to bottom)
$endgroup$
– Jasen
yesterday
$begingroup$
Note that there are latching relays with one coil, where you reverse the coil drive to toggle the states.
$endgroup$
– Connor Wolf
yesterday
$begingroup$
Note that there are latching relays with one coil, where you reverse the coil drive to toggle the states.
$endgroup$
– Connor Wolf
yesterday
$begingroup$
reversing the polarity will not help, unless they use diodes to control 2 coils with 2 wires. generally relays are made to be polarity agnostic, so they can be sold to use with AC.
$endgroup$
– Harper
7 hours ago
$begingroup$
reversing the polarity will not help, unless they use diodes to control 2 coils with 2 wires. generally relays are made to be polarity agnostic, so they can be sold to use with AC.
$endgroup$
– Harper
7 hours ago
$begingroup$
@Harper Some of them are, some are not. The more common type of latching relay is called a single-coil latching relay, and they are polarity sensitive.
$endgroup$
– Hearth
7 hours ago
$begingroup$
@Harper Some of them are, some are not. The more common type of latching relay is called a single-coil latching relay, and they are polarity sensitive.
$endgroup$
– Hearth
7 hours ago
$begingroup$
@Harper: "generally relays are made to be polarity agnostic, ..." Yes, so they can work with DC on either polarity. "... so they can be sold to use with AC ..." I have seen this very rarely. The AC types usually rely on their inductance to limit current and on DC the current would be limited only by the inductance. I seem to remember a particular model rated for 120 V AC / 24 V DC which seemed interesting.
$endgroup$
– Transistor
7 hours ago
$begingroup$
@Harper: "generally relays are made to be polarity agnostic, ..." Yes, so they can work with DC on either polarity. "... so they can be sold to use with AC ..." I have seen this very rarely. The AC types usually rely on their inductance to limit current and on DC the current would be limited only by the inductance. I seem to remember a particular model rated for 120 V AC / 24 V DC which seemed interesting.
$endgroup$
– Transistor
7 hours ago
|
show 1 more comment
$begingroup$
Example of a mechanical latching relays can be found in early telephone exchanges.
The stepping relay, or Strowger switch, was used to establish a switched circuit through a telephony exchange. Power was used to advance the relay for each click of the dial pulse, but once the digit was complete, the switch held its position.
More advanced exchanges used crossbar switches which connected more points in less space. These were also latching and did not require power to maintain each specific connection.
$endgroup$
add a comment |
$begingroup$
Example of a mechanical latching relays can be found in early telephone exchanges.
The stepping relay, or Strowger switch, was used to establish a switched circuit through a telephony exchange. Power was used to advance the relay for each click of the dial pulse, but once the digit was complete, the switch held its position.
More advanced exchanges used crossbar switches which connected more points in less space. These were also latching and did not require power to maintain each specific connection.
$endgroup$
add a comment |
$begingroup$
Example of a mechanical latching relays can be found in early telephone exchanges.
The stepping relay, or Strowger switch, was used to establish a switched circuit through a telephony exchange. Power was used to advance the relay for each click of the dial pulse, but once the digit was complete, the switch held its position.
More advanced exchanges used crossbar switches which connected more points in less space. These were also latching and did not require power to maintain each specific connection.
$endgroup$
Example of a mechanical latching relays can be found in early telephone exchanges.
The stepping relay, or Strowger switch, was used to establish a switched circuit through a telephony exchange. Power was used to advance the relay for each click of the dial pulse, but once the digit was complete, the switch held its position.
More advanced exchanges used crossbar switches which connected more points in less space. These were also latching and did not require power to maintain each specific connection.
answered 15 hours ago
cmmcmm
21613
21613
add a comment |
add a comment |
$begingroup$
In a way, each cell in non-volatile memory (NVRAM) is a latching relay. Each cell stores its state when power is removed and uses no power to remain as it is. Only when the state is changed does the "bit" use power.
In many implementations of NVRAM, the state is stored as an island of electrical charge stored within an insulating framework. The stored charge influences the ability of current to flow through an adjacent semiconductor channel.
$endgroup$
add a comment |
$begingroup$
In a way, each cell in non-volatile memory (NVRAM) is a latching relay. Each cell stores its state when power is removed and uses no power to remain as it is. Only when the state is changed does the "bit" use power.
In many implementations of NVRAM, the state is stored as an island of electrical charge stored within an insulating framework. The stored charge influences the ability of current to flow through an adjacent semiconductor channel.
$endgroup$
add a comment |
$begingroup$
In a way, each cell in non-volatile memory (NVRAM) is a latching relay. Each cell stores its state when power is removed and uses no power to remain as it is. Only when the state is changed does the "bit" use power.
In many implementations of NVRAM, the state is stored as an island of electrical charge stored within an insulating framework. The stored charge influences the ability of current to flow through an adjacent semiconductor channel.
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In a way, each cell in non-volatile memory (NVRAM) is a latching relay. Each cell stores its state when power is removed and uses no power to remain as it is. Only when the state is changed does the "bit" use power.
In many implementations of NVRAM, the state is stored as an island of electrical charge stored within an insulating framework. The stored charge influences the ability of current to flow through an adjacent semiconductor channel.
answered 15 hours ago
cmmcmm
21613
21613
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If you want a readily available example, GE makes a line of latching relays called RR7. They are used for commercial lighting. They work exactly as you wish, and run on 24 VAC or DC or voltages in that ballpark.
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add a comment |
$begingroup$
If you want a readily available example, GE makes a line of latching relays called RR7. They are used for commercial lighting. They work exactly as you wish, and run on 24 VAC or DC or voltages in that ballpark.
$endgroup$
add a comment |
$begingroup$
If you want a readily available example, GE makes a line of latching relays called RR7. They are used for commercial lighting. They work exactly as you wish, and run on 24 VAC or DC or voltages in that ballpark.
$endgroup$
If you want a readily available example, GE makes a line of latching relays called RR7. They are used for commercial lighting. They work exactly as you wish, and run on 24 VAC or DC or voltages in that ballpark.
answered 7 hours ago
HarperHarper
6,957927
6,957927
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Also the Half-Bridge FET Relay only consumes power during the switching transition which is proportional to the Q charge on the Gate input and Drain output during switching. However, in normal operation, they are used to also vary voltage with PWM which draws switching power at a higher rate. But the high side of the dual half-bridge or "full-H bridge" bridge is used to change directions of current after flow has stopped with very little power.
However, IGBT's with FET input are more suited to AC line voltage and require costly protection for line faults or surges.
Similarily , the Thyristor family of parts only need a pulse to latch-on for the next cycle.
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add a comment |
$begingroup$
Also the Half-Bridge FET Relay only consumes power during the switching transition which is proportional to the Q charge on the Gate input and Drain output during switching. However, in normal operation, they are used to also vary voltage with PWM which draws switching power at a higher rate. But the high side of the dual half-bridge or "full-H bridge" bridge is used to change directions of current after flow has stopped with very little power.
However, IGBT's with FET input are more suited to AC line voltage and require costly protection for line faults or surges.
Similarily , the Thyristor family of parts only need a pulse to latch-on for the next cycle.
$endgroup$
add a comment |
$begingroup$
Also the Half-Bridge FET Relay only consumes power during the switching transition which is proportional to the Q charge on the Gate input and Drain output during switching. However, in normal operation, they are used to also vary voltage with PWM which draws switching power at a higher rate. But the high side of the dual half-bridge or "full-H bridge" bridge is used to change directions of current after flow has stopped with very little power.
However, IGBT's with FET input are more suited to AC line voltage and require costly protection for line faults or surges.
Similarily , the Thyristor family of parts only need a pulse to latch-on for the next cycle.
$endgroup$
Also the Half-Bridge FET Relay only consumes power during the switching transition which is proportional to the Q charge on the Gate input and Drain output during switching. However, in normal operation, they are used to also vary voltage with PWM which draws switching power at a higher rate. But the high side of the dual half-bridge or "full-H bridge" bridge is used to change directions of current after flow has stopped with very little power.
However, IGBT's with FET input are more suited to AC line voltage and require costly protection for line faults or surges.
Similarily , the Thyristor family of parts only need a pulse to latch-on for the next cycle.
edited 7 hours ago
answered 7 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
71.9k227103
71.9k227103
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Barış Doğa Yavaş is a new contributor. Be nice, and check out our Code of Conduct.
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