The presented circuit was found in the National Semiconductor FET Databook. The setting applies to other operational amplifiers and other FETs. The power supply must be symmetrical.
This circuit is from a Radio Electronics magazine from August 1990. The circuit uses components from the...
The circuit we show is part of an article that taught its complete assembly. The article is from...
This ultra-simple polarity indicator uses common green and red LEDs and can work with 3 to 9 V...