This crystal tester was found on a 90s Ham Radio. Transistors are commonly used. The circuit is for testing crystals from 2 to 20 MHz.
Found in old documentation, this circuit uses special discharge lamps (neon) of the time. The...
This circuit simulates a diode whose characteristics can be adjusted with a trimpot. The circuit is...
May 2017 - Mouser Electronics already has Microchip's new MCP14A0451 and MCP14A0452 integrated...