This circuit for a frequency of 40 kHz was found in an old Electronic Design. There were no constructive data for the transformer used in the output.
This low distortion circuit was found in a 1964 Electronic Design. The transistor admits...
This is a conventional circuit with triac but no diac which would be nice in place of R2. In the...
This half-wave regenerative control was found in an old RCA manual. The circuit can be designed...