This toy transistorized organ was found in the May 1970 issue of Radio Electronics magazine. The trimpots are adjusted to the musical notes according to the key.
Using junction FETs, a configurable configuration is achieved for very low frequencies. FETs can...
This is a conventional circuit with triac but no diac which would be nice in place of R2. In the...
This simple teaching circuit uses 5 transistors in a monophonic organ version whose notes are...