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How long does it take for electricity to be considered OFF by general appliances?
What supplies ATS control circuit when the mains fail?How does a thermoelectric generator generates electricity?How does lightning affect electricity?Dual power supply: Battery and 5VHow does a bi-directional electricity meter know import from export?How does conversion to electricity work?Using a p channel mosfet to switch a RF switchTo use a Dual Voltage Electric LED Bulb E26 in a E27 environment/ socket?How does electricity travel through saltwaterAutomatic transfer switch or some such solution
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
$begingroup$
I'm looking for an ATS (or DIY) to switch between my solar and grid power.
I've seen some automatic ATS like here
I've seen on youtube someone uses this model and his computer is switching between solar and grid without "power cut". According to the details of the product : "Transfer Time:≤10ms".
Transfer time is so low that the computer didn't see it as a power cut.
What are the factors that can influence this ? Is it related to the appliance ?
I was expecting the computer to turn off and turn on again. Do you know what is the maximum number of ms that will trigger a "power cut".
Will it be difficult to DIY ?
switches electricity ats
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
$endgroup$
|
show 4 more comments
$begingroup$
I'm looking for an ATS (or DIY) to switch between my solar and grid power.
I've seen some automatic ATS like here
I've seen on youtube someone uses this model and his computer is switching between solar and grid without "power cut". According to the details of the product : "Transfer Time:≤10ms".
Transfer time is so low that the computer didn't see it as a power cut.
What are the factors that can influence this ? Is it related to the appliance ?
I was expecting the computer to turn off and turn on again. Do you know what is the maximum number of ms that will trigger a "power cut".
Will it be difficult to DIY ?
switches electricity ats
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
$endgroup$
$begingroup$
it can actually be done so quickly there's no noticeable drop out whatsoever, if started just before a zero-crossing. Most common relays take longer, 20-40ms iirc.
$endgroup$
– dandavis
Jul 30 at 21:38
3
$begingroup$
Most devices have components called "capacitors", which can store a small amount of electric charge. There is normally a bank of large capacitance at the power input to the device, and these capacitors help filter out noise (variations in the input voltage) and present a stable voltage to downstream electronics. How long that'll last once power is cut depends on the design of the device and how much power it is dissipating at the time power was lost.
$endgroup$
– Steve
Jul 30 at 21:58
$begingroup$
When designing a piece of test equipment years ago, we needed to ensure that data was properly written to an EEPROM if power was lost, so that the data was not lost. We figured we needed 10 ms to accomplish this. We measured how much power the equipment needed to operate, and ensured we had enough capacitance to get that last gasp task accomplished. The time we chose was to solve a design problem specific to this device.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
Capacitors cost money, and minimizing the components in a product is important to the bottom line.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
BTW, you can see this with something like a laptop power supply. There is usually an LED on the brick. If you unplug the brick from the wall without the laptop connected, that LED will remain lit for a long time. Plug it into the laptop and it'll probably go out very quickly. Here, the load at the time of power loss is being changed, and the LED is the "capacitors still have some power in them" indicator.
$endgroup$
– Steve
Jul 30 at 22:02
|
show 4 more comments
$begingroup$
I'm looking for an ATS (or DIY) to switch between my solar and grid power.
I've seen some automatic ATS like here
I've seen on youtube someone uses this model and his computer is switching between solar and grid without "power cut". According to the details of the product : "Transfer Time:≤10ms".
Transfer time is so low that the computer didn't see it as a power cut.
What are the factors that can influence this ? Is it related to the appliance ?
I was expecting the computer to turn off and turn on again. Do you know what is the maximum number of ms that will trigger a "power cut".
Will it be difficult to DIY ?
switches electricity ats
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
$endgroup$
I'm looking for an ATS (or DIY) to switch between my solar and grid power.
I've seen some automatic ATS like here
I've seen on youtube someone uses this model and his computer is switching between solar and grid without "power cut". According to the details of the product : "Transfer Time:≤10ms".
Transfer time is so low that the computer didn't see it as a power cut.
What are the factors that can influence this ? Is it related to the appliance ?
I was expecting the computer to turn off and turn on again. Do you know what is the maximum number of ms that will trigger a "power cut".
Will it be difficult to DIY ?
switches electricity ats
switches electricity ats
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
edited Jul 30 at 13:08
Dave Tweed♦
132k11 gold badges166 silver badges285 bronze badges
132k11 gold badges166 silver badges285 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
asked Jul 30 at 13:03
bob dylanbob dylan
1396 bronze badges
1396 bronze badges
$begingroup$
it can actually be done so quickly there's no noticeable drop out whatsoever, if started just before a zero-crossing. Most common relays take longer, 20-40ms iirc.
$endgroup$
– dandavis
Jul 30 at 21:38
3
$begingroup$
Most devices have components called "capacitors", which can store a small amount of electric charge. There is normally a bank of large capacitance at the power input to the device, and these capacitors help filter out noise (variations in the input voltage) and present a stable voltage to downstream electronics. How long that'll last once power is cut depends on the design of the device and how much power it is dissipating at the time power was lost.
$endgroup$
– Steve
Jul 30 at 21:58
$begingroup$
When designing a piece of test equipment years ago, we needed to ensure that data was properly written to an EEPROM if power was lost, so that the data was not lost. We figured we needed 10 ms to accomplish this. We measured how much power the equipment needed to operate, and ensured we had enough capacitance to get that last gasp task accomplished. The time we chose was to solve a design problem specific to this device.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
Capacitors cost money, and minimizing the components in a product is important to the bottom line.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
BTW, you can see this with something like a laptop power supply. There is usually an LED on the brick. If you unplug the brick from the wall without the laptop connected, that LED will remain lit for a long time. Plug it into the laptop and it'll probably go out very quickly. Here, the load at the time of power loss is being changed, and the LED is the "capacitors still have some power in them" indicator.
$endgroup$
– Steve
Jul 30 at 22:02
|
show 4 more comments
$begingroup$
it can actually be done so quickly there's no noticeable drop out whatsoever, if started just before a zero-crossing. Most common relays take longer, 20-40ms iirc.
$endgroup$
– dandavis
Jul 30 at 21:38
3
$begingroup$
Most devices have components called "capacitors", which can store a small amount of electric charge. There is normally a bank of large capacitance at the power input to the device, and these capacitors help filter out noise (variations in the input voltage) and present a stable voltage to downstream electronics. How long that'll last once power is cut depends on the design of the device and how much power it is dissipating at the time power was lost.
$endgroup$
– Steve
Jul 30 at 21:58
$begingroup$
When designing a piece of test equipment years ago, we needed to ensure that data was properly written to an EEPROM if power was lost, so that the data was not lost. We figured we needed 10 ms to accomplish this. We measured how much power the equipment needed to operate, and ensured we had enough capacitance to get that last gasp task accomplished. The time we chose was to solve a design problem specific to this device.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
Capacitors cost money, and minimizing the components in a product is important to the bottom line.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
BTW, you can see this with something like a laptop power supply. There is usually an LED on the brick. If you unplug the brick from the wall without the laptop connected, that LED will remain lit for a long time. Plug it into the laptop and it'll probably go out very quickly. Here, the load at the time of power loss is being changed, and the LED is the "capacitors still have some power in them" indicator.
$endgroup$
– Steve
Jul 30 at 22:02
$begingroup$
it can actually be done so quickly there's no noticeable drop out whatsoever, if started just before a zero-crossing. Most common relays take longer, 20-40ms iirc.
$endgroup$
– dandavis
Jul 30 at 21:38
$begingroup$
it can actually be done so quickly there's no noticeable drop out whatsoever, if started just before a zero-crossing. Most common relays take longer, 20-40ms iirc.
$endgroup$
– dandavis
Jul 30 at 21:38
3
3
$begingroup$
Most devices have components called "capacitors", which can store a small amount of electric charge. There is normally a bank of large capacitance at the power input to the device, and these capacitors help filter out noise (variations in the input voltage) and present a stable voltage to downstream electronics. How long that'll last once power is cut depends on the design of the device and how much power it is dissipating at the time power was lost.
$endgroup$
– Steve
Jul 30 at 21:58
$begingroup$
Most devices have components called "capacitors", which can store a small amount of electric charge. There is normally a bank of large capacitance at the power input to the device, and these capacitors help filter out noise (variations in the input voltage) and present a stable voltage to downstream electronics. How long that'll last once power is cut depends on the design of the device and how much power it is dissipating at the time power was lost.
$endgroup$
– Steve
Jul 30 at 21:58
$begingroup$
When designing a piece of test equipment years ago, we needed to ensure that data was properly written to an EEPROM if power was lost, so that the data was not lost. We figured we needed 10 ms to accomplish this. We measured how much power the equipment needed to operate, and ensured we had enough capacitance to get that last gasp task accomplished. The time we chose was to solve a design problem specific to this device.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
When designing a piece of test equipment years ago, we needed to ensure that data was properly written to an EEPROM if power was lost, so that the data was not lost. We figured we needed 10 ms to accomplish this. We measured how much power the equipment needed to operate, and ensured we had enough capacitance to get that last gasp task accomplished. The time we chose was to solve a design problem specific to this device.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
Capacitors cost money, and minimizing the components in a product is important to the bottom line.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
Capacitors cost money, and minimizing the components in a product is important to the bottom line.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
BTW, you can see this with something like a laptop power supply. There is usually an LED on the brick. If you unplug the brick from the wall without the laptop connected, that LED will remain lit for a long time. Plug it into the laptop and it'll probably go out very quickly. Here, the load at the time of power loss is being changed, and the LED is the "capacitors still have some power in them" indicator.
$endgroup$
– Steve
Jul 30 at 22:02
$begingroup$
BTW, you can see this with something like a laptop power supply. There is usually an LED on the brick. If you unplug the brick from the wall without the laptop connected, that LED will remain lit for a long time. Plug it into the laptop and it'll probably go out very quickly. Here, the load at the time of power loss is being changed, and the LED is the "capacitors still have some power in them" indicator.
$endgroup$
– Steve
Jul 30 at 22:02
|
show 4 more comments
1 Answer
1
active
oldest
votes
$begingroup$
It depends very much on the appliance. But most appliances with power supplies are really taking in power in pulses at a rate of 120 Hz (in a 60 Hz system), so they're already designed to "ride through" gaps of at least 8.33 ms. 10 ms is so close to this that they won't even notice.
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
$endgroup$
6
$begingroup$
Additional note: ATX power supplies for computers have to have at least 16 ms hold up time to be conform to the specification.
$endgroup$
– jusaca
Jul 30 at 13:14
2
$begingroup$
@jusaca Note that overloading ATX power supplies will usually cause them to fail to meet this specification, particularly cheap and/or low-quality power supplies.
$endgroup$
– David Schwartz
Jul 30 at 23:20
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
It depends very much on the appliance. But most appliances with power supplies are really taking in power in pulses at a rate of 120 Hz (in a 60 Hz system), so they're already designed to "ride through" gaps of at least 8.33 ms. 10 ms is so close to this that they won't even notice.
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
$endgroup$
6
$begingroup$
Additional note: ATX power supplies for computers have to have at least 16 ms hold up time to be conform to the specification.
$endgroup$
– jusaca
Jul 30 at 13:14
2
$begingroup$
@jusaca Note that overloading ATX power supplies will usually cause them to fail to meet this specification, particularly cheap and/or low-quality power supplies.
$endgroup$
– David Schwartz
Jul 30 at 23:20
add a comment |
$begingroup$
It depends very much on the appliance. But most appliances with power supplies are really taking in power in pulses at a rate of 120 Hz (in a 60 Hz system), so they're already designed to "ride through" gaps of at least 8.33 ms. 10 ms is so close to this that they won't even notice.
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
$endgroup$
6
$begingroup$
Additional note: ATX power supplies for computers have to have at least 16 ms hold up time to be conform to the specification.
$endgroup$
– jusaca
Jul 30 at 13:14
2
$begingroup$
@jusaca Note that overloading ATX power supplies will usually cause them to fail to meet this specification, particularly cheap and/or low-quality power supplies.
$endgroup$
– David Schwartz
Jul 30 at 23:20
add a comment |
$begingroup$
It depends very much on the appliance. But most appliances with power supplies are really taking in power in pulses at a rate of 120 Hz (in a 60 Hz system), so they're already designed to "ride through" gaps of at least 8.33 ms. 10 ms is so close to this that they won't even notice.
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
$endgroup$
It depends very much on the appliance. But most appliances with power supplies are really taking in power in pulses at a rate of 120 Hz (in a 60 Hz system), so they're already designed to "ride through" gaps of at least 8.33 ms. 10 ms is so close to this that they won't even notice.
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
answered Jul 30 at 13:10
Dave Tweed♦Dave Tweed
132k11 gold badges166 silver badges285 bronze badges
132k11 gold badges166 silver badges285 bronze badges
6
$begingroup$
Additional note: ATX power supplies for computers have to have at least 16 ms hold up time to be conform to the specification.
$endgroup$
– jusaca
Jul 30 at 13:14
2
$begingroup$
@jusaca Note that overloading ATX power supplies will usually cause them to fail to meet this specification, particularly cheap and/or low-quality power supplies.
$endgroup$
– David Schwartz
Jul 30 at 23:20
add a comment |
6
$begingroup$
Additional note: ATX power supplies for computers have to have at least 16 ms hold up time to be conform to the specification.
$endgroup$
– jusaca
Jul 30 at 13:14
2
$begingroup$
@jusaca Note that overloading ATX power supplies will usually cause them to fail to meet this specification, particularly cheap and/or low-quality power supplies.
$endgroup$
– David Schwartz
Jul 30 at 23:20
6
6
$begingroup$
Additional note: ATX power supplies for computers have to have at least 16 ms hold up time to be conform to the specification.
$endgroup$
– jusaca
Jul 30 at 13:14
$begingroup$
Additional note: ATX power supplies for computers have to have at least 16 ms hold up time to be conform to the specification.
$endgroup$
– jusaca
Jul 30 at 13:14
2
2
$begingroup$
@jusaca Note that overloading ATX power supplies will usually cause them to fail to meet this specification, particularly cheap and/or low-quality power supplies.
$endgroup$
– David Schwartz
Jul 30 at 23:20
$begingroup$
@jusaca Note that overloading ATX power supplies will usually cause them to fail to meet this specification, particularly cheap and/or low-quality power supplies.
$endgroup$
– David Schwartz
Jul 30 at 23:20
add a comment |
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$begingroup$
it can actually be done so quickly there's no noticeable drop out whatsoever, if started just before a zero-crossing. Most common relays take longer, 20-40ms iirc.
$endgroup$
– dandavis
Jul 30 at 21:38
3
$begingroup$
Most devices have components called "capacitors", which can store a small amount of electric charge. There is normally a bank of large capacitance at the power input to the device, and these capacitors help filter out noise (variations in the input voltage) and present a stable voltage to downstream electronics. How long that'll last once power is cut depends on the design of the device and how much power it is dissipating at the time power was lost.
$endgroup$
– Steve
Jul 30 at 21:58
$begingroup$
When designing a piece of test equipment years ago, we needed to ensure that data was properly written to an EEPROM if power was lost, so that the data was not lost. We figured we needed 10 ms to accomplish this. We measured how much power the equipment needed to operate, and ensured we had enough capacitance to get that last gasp task accomplished. The time we chose was to solve a design problem specific to this device.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
Capacitors cost money, and minimizing the components in a product is important to the bottom line.
$endgroup$
– Steve
Jul 30 at 22:00
$begingroup$
BTW, you can see this with something like a laptop power supply. There is usually an LED on the brick. If you unplug the brick from the wall without the laptop connected, that LED will remain lit for a long time. Plug it into the laptop and it'll probably go out very quickly. Here, the load at the time of power loss is being changed, and the LED is the "capacitors still have some power in them" indicator.
$endgroup$
– Steve
Jul 30 at 22:02