This circuit was presented in a January 1990 Radio Electronics magazine article as part of a home theater sound effects system. It consists of a 3 kHz high-pass filter.
This circuit is from a Radio Electronics from March 1960. The generator works with a 22.5 V...
We find in a Radio Electronics of the 90s this low noise amplifier that makes use of an uncommon...
In short wave receivers or in the recovery of signals from scratched discs this circuit can be...