This modulator circuit for low intensity signals is from old documentation. The integrated circuit used is uncommon today. The circuit operates with signals up to 2MHz.
This stage of low power audio amplification was very common in devices powered by the 60's and...
This different circuit was found in a Radio Electronics from August 1965. It works with a voltage of...
This circuit was found in a 1980s documentation from the manufacturer of the integrated. The...