We found this circuit for vocal effects in the September 1990 issue of Radio Electronics magazine. The circuit works with signals from two inputs of a stereo system.
It can be obtained from Mouser Electronics new crystals for surface mounting from AVX with...
We found this circuit in a 1991s PE Hobbyst Handbook. The circuit fires 10 LEDs that can control...
This circuit is from a high voltage tube source. It does not include the filament voltage that must...