This circuit is from 1970 documentation. The SCRs are types of the era that can be replaced with 106 Series equivalents. The circuit is powered with 100 V dc.
The circuit presented was obtained from a 1976 Italian Radio Elettronica but can be easily...
This crystal-controlled circuit with 60 mW output power is in the Radio Electronics magazine of...
This circuit is from a 1981 publication. The DC supply can be made with voltages from 6 to 12 V...