This circuit is from a 1980s Motorola documentation. The circuit can be made with modern equivalent components. The original circuit is for the 115 Vac (110 V) grid and has two settings.
Vishay's VCNL4200 integrated circuit consists of a fully integrated proximity detector containing...
We find this circuit in a 1976 NASA handbook. The circuit can be designed based on current logical...
This circuit indicates the logic level of a digital signal. LEDs can replace the lamp, wired with...