This circuit was obtained from the October 1977 Radio Electronics magazine. The meter is analog, and the maximum selected power is 100W.
This circuit was taken from recent English documentation. The circuit uses a 500 uA microammeter as an...
Found in Popular Electronics from the 90s, this circuit uses a reed switch on the rails as a...
This filter for scratch and rumble noises that occur on turntables was found in the February 1995...