This circuit that has a response from 10 Hz to 700 kHz was found in Philips documentation from 1968. Dual transistors can be replaced by matched pairs.
We found this version of the automotive tachometer in a 1980s publication. Variations from other...
This circuit can be used as a low Power audio booster for experimental projects such as radios,...
June 2017 - These new AVX capacitors are suitable for filter applications, considerably reducing...