??? 06/23/04 14:46 Read: times |
#73025 - RE: Current & Voltage Monitor with RS232 Responding to: ???'s previous message |
erik malund wrote:
------------------------------- I would consider 4 things 1) reduce the 1M resistors at the unity gain op-amps, the leak on a humidified PCB can affect resistors of this size. ..This circuit is NOT mains isolated. Charles intends these to be protective resistors I suspect. Steve |