3) LED as a High a.c voltage indicator: To prevent the reverse biased destruction rectifier diode D is used. The presence of voltage is instead of series resistor, a capacitor is used whose reactance ...

Yellow LED 5mm - 8 Red LED 5mm - 2 1K Resistor - 1 10K Pot - 1 Soldering Wire 1mm copper wire Circuit Diagram - LED VU Meter The circuit diagram of the LED VU meter is very simple and easy to ...

A Simple Over-Voltage Protection Circuit for LED Drivers This boost circuit implements current mode control and senses the LED current via resistor R14. The output voltage is boosted to just over 30V ...