Active with the output at the high level, this oscillator was found in November 1984 Radio Electronics magazine. The supply can be between 3 and 12 V and the output signal is rectangular.
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...