This circuit was found in a documentation for radio amateurs from the year 70. Its purpose is to produce a tone on a transducer when transmitting messages in SSB telegraphy.
This circuit can be used in a toy organ. The frequencies are determined by the capacitors selected by...
May 2016 - Mouser Electronics is sourcing the new high-performance audio amplifiers with bipolar...
This circuit was obtained from the 1976 Siemens Integrated Circuits Manual. It is the circuit for...