/diy/ - Do It Yourself

Hi, /ohm/.

Would this work for power-loss detection?

The "logic output" is a microcontroller pin, the led above is just simulating a load. The idea is that the OP-AMP will switch it's output state before the bigger cap can't power the microcontroller anymore, so it will know a power loss occurred and write what it needs to eeprom, and also go into a state where it's just idling (cuts power to the loads, etc) until the OP-AMP output is high again, then it can resume doing whatever it was doing.