10 LED vu meter circuit | Next Electronics

Automatic Control for LCD Panel Backlight

This is an automatic LCD panel backlight control circuit. It is a simple, low-cost implementation of an LED controller that can compensate for aging effects. The automatic LCD panel backlight control circuit is designed to enhance the performance and longevity of...

230 V 50Hz AC (or 110V 60Hz) Main Operated LED Powerful NIGHT LAMPCircuit

If you plan to use this circuit with a 110V 60Hz supply instead of a 230V 50Hz supply, or if you intend to modify this circuit, please refer to the section titled "Common Questions about this Circuit" found below the...

220v LED DIMMER

A circuit was discovered in a computer, and there is uncertainty regarding its origin and functionality. The main inquiry is whether this circuit can effectively dim 220V LED bulbs. The circuit in question likely utilizes a phase control method for dimming,...

VU Meter 3

A very simple circuit for indicating levels, utilizing 10 LEDs. The circuit employs a precision half-wave rectification around the IC2, with a gain of one. The switch S1 allows for the selection of which LED to indicate. The input level...

LED CHASER Sequencer

All LED negatives are connected to the "COM" pad, then through a 220 Ohm resistor to ground. There is no need for additional current limiting resistors, even with supply voltages up to 16 volts. The described circuit employs a simple yet...

Fading LEDs

This circuit operates two LED strips in pulsing mode, i.e. one LED strip goes from off state, lights up gradually, then dims gradually, etc. while the other LED strip does the contrary. Each strip can be made up from 2...

LED Brake/Rear Light Specifically for motorcycles Circuit diagram

LEDs are increasingly utilized in motor vehicles, replacing traditional incandescent lamps due to their superior energy efficiency and extended lifespan. This article outlines a straightforward LED tail light specifically designed for motorcycles, scooters, and mopeds. There is a notable demand...

lighting leds

For optimal lifespan, it is recommended to operate LEDs at 20-25 milliamps (mA). However, in certain LED flashlight conversions, including many commercial LED flashlights, the LEDs are often driven at 50-60 mA, which is twice the rated current. Testing has...

5 Dot Led Level Meter

The Allegro A8732 is a Xenon photoflash charger integrated circuit (IC) specifically designed for ultra-low power, compact cameras, especially in mobile devices such as camera phones. It utilizes primary-side voltage sensing, which eliminates the need for a secondary-side resistive voltage...