Circuit diagrams and schematics - Electronic projects

This Circuit helps in the monitoring of mains supply voltage. It does not use a isolation step down transformer. This has to be constructed only by skilled people with knowledge of safety requirements. C1 0.47uF can be brought down to 0.22uF for low LED currents, use high efficiency ultra bright LEDs.C1 should be 440V AC [...]

This circuit uses LED – 2 pcs. show something On – Off of or the circuit that use Battery. By LED – D1 flasher , when open and D2 flasher when open. While open that have charge current amount of flow through D1 go to Charge Capacitors 1000 uF , make D1 stick or shine [...]

The LED Indicator for remote AC loads Circuit. At very cheap and use electronic part the a little. This circuit uses diode rectifier cheapness , Resistor and LED only. As a result assemble the circuit shows flowwing of AC current Source in load easily. Although intend to design for apply to office implement with main [...]