| ??? 08/27/03 18:24 Read: times |
#53535 - RE: Cheap Low Battery Detector using opamps? Responding to: ???'s previous message |
BTW, I just found out that the TWO available opamps are LM339 (comparitors) instead.
Even if the inputs are high impedence, won't the "trigger voltage" and monitor voltage drop linearly as the battery drops? It seems like a comparison like this would never work since both inputs and the supply will drop in unison. Javier |
