Hi, team
Description:
This circuit launches the relay when the power comes off using a capacitor charged when the power on, so it is not needed any extra power for the relay.
Increase the size of this C1 to increase the delay time, the power is 6v.
Benefit:
I have a server computer connected to a UPS that give me 10 minutes backup time when the main power goes off, at this time I must shut down the computer.
The problem my UPS doesn't have any feature to send that signal to my computer, and any new UPS will be expensive.
Also my computer has no any COM port to accept the old type of UPS.
The circuit powered by a transformer connected directly to main power not to the UPS.
I will take two wires from the Power Button (on the mother board) and link it to this relay. When the main power off, my computer still on, and gets a signal to shut down from that relay as like if we press the Power button, we need to config our system (Windows 2003) to take this action.
Also, I configured my bios to turn on when the AC comes back, so when the main power come, my computer will turn.
Until now I have tested it in the breadboard, and I need some one approve it before put it in my blog, or check it if we can improve it.
This is my first circuit at my age, I am just a programer.
Thanks in advance
Zaher Dirkey
Description:
This circuit launches the relay when the power comes off using a capacitor charged when the power on, so it is not needed any extra power for the relay.
Increase the size of this C1 to increase the delay time, the power is 6v.
Benefit:
I have a server computer connected to a UPS that give me 10 minutes backup time when the main power goes off, at this time I must shut down the computer.
The problem my UPS doesn't have any feature to send that signal to my computer, and any new UPS will be expensive.
Also my computer has no any COM port to accept the old type of UPS.
The circuit powered by a transformer connected directly to main power not to the UPS.
I will take two wires from the Power Button (on the mother board) and link it to this relay. When the main power off, my computer still on, and gets a signal to shut down from that relay as like if we press the Power button, we need to config our system (Windows 2003) to take this action.
Also, I configured my bios to turn on when the AC comes back, so when the main power come, my computer will turn.
Until now I have tested it in the breadboard, and I need some one approve it before put it in my blog, or check it if we can improve it.
This is my first circuit at my age, I am just a programer.
Thanks in advance
Zaher Dirkey
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