This circuit is from the Linear Applications Handbook of the National Semiconductor of 1994. Transistors are common, but the integrated circuit is not easy to obtain today.
This circuit checks the infrared emission of a common remote control. We found it in the March 1993...
This oscillator can run in frequencies up 10 MHz depending on the Power supply voltage. The 1 µF...
) This circuit is from a 1967 RCA SCR manual. The circuit uses components from the era that can be...