This circuit was obtained from the April 1978 Radio Electronics magazine. The other circuit is a PLL of the time. The power supply must be 15 V symmetrical.
The MC1455 integrated circuit consists of a version of the 555 made by Motorola. The circuit given...
This circuit, from the ON Semiconductor Thyristor Manual, controls both the speed and direction of...
This circuit allows linear brightness control of an LED from an input voltage. The power supply must...