This circuit is a four-quadrant multiplier using an LM3900. The circuit was found in the July 1988 Radio Electronics magazine.
Interval pulses emitted by this circuit are picked up in a medium wave radio nearby. The circuit is...
Alorium Tech XLR8 Application Accelerator & Development Board is an Arduino-compatible board that...
This different astable configuration was found in one in a 1974 Ferranti transistor manual....