This circuit found in the February 1992 issue of Radio Electronics magazine is designed to adapt an audio signal for use in a computer's ADC. It can be adapted to operate with microcontrollers.
This stereo preamp uses only two germanium transistors. The circuit was found in old documentation using...
This simple configuration can be found in other articles on this site. The phone used must be high...
This integrated consists of a mono amplifier for battery powered recorders and radios. The load...