John Firestone

John Firestone, Bremerhaven, Germany.

Areas of interest of the author: Audio

Publications on RadioLocman by the author John Firestone:

Build a simple, soft-action muting switch
The circuit in Figure 1 adds a soft muting switch with power-up/power-down muting to a line-level audio circuit. R4, C1, and JFET Q1 quietly ground a signal in 100 to 200 msec when you close S1 or release it when you open S1. Potentiometer R2, set to twice...
Jun 4, 2025

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