This circuit was obtained from an 80's Electronic Engineering. The circuit detects ice formation by triggering a warning light. The operational amplifier is of the time.
This source can supply currents up to 1 A. The circuit is from Motorola's 1993 Linear Interface ICs....
The presented circuit uses a symmetrical power source to supply an amplifier with the LM139 or...
You can measure capacitances across a large range of values using the AC Power line frequency as...