This circuit is the receiver for the transmitter from the previous project. We also found it in the Radio Electronics Experimenter magazine, 1989 issue.
This circuit is from the LM111 manual of the 1980s. The component no longer exists, but...
This peak indicator for stereo amplifiers uses a CA3130. The 80's circuit does not need a...
Other series amplifiers such as the MC3301, MC3401 and LM2900 can be used on this circuit. We...