This circuit was found in a Signetics documentation from the 1980s. The integrated is a PLL and the SCR is a general purpose type The pitch frequency is given by R1 and C1 as formula next to the diagram.
This motor control using transistors was found in a recent English publication. The circuit is for...
If we modulate a beam of light from an LED, for example, we can receive this beam of light at a...
This constant current charger from 1997 Linear Technology Applications uses common components at...