VU LED Level Meter circuit | Next Electronics

VU (Volume Unit) meters used to be the mainstay of audio metering systems, but they have been replaced by LED metering in a great many mixers and other applications. Even in software, the most common level meter is made to...

vu meter circuit

The NL3ASD schematic pages provide the schematics for a LED VU meter utilizing the UAA180 integrated circuit. The NL3ASD schematic pages feature a comprehensive design for a LED VU meter that employs the UAA180 IC, known for its audio signal processing...

6V Ultra-Bright LED Chasers

This project involves a sequence of Ultra-Bright LEDs that light up briefly in a circular pattern, mounted on a CD. The LEDs flash for 15 milliseconds, followed by a one-second pause, creating a visually appealing effect. The brief flashes and...

Audio VU Level Meter Circuit with LM324

This weblog discusses electronic circuit schematics, PCB design, DIY kits, and electronic project diagrams. The 1K resistors in the circuit are significant as they allow the LEDs to activate at different audio levels. While these resistors can be modified, using...

flashingLEDs

Several individuals have requested clarification on calculating resistor values for a triac circuit. This information may be beneficial for adapting the Sous Vader for custom builds. The circuit in question involves the resistor values R1 and R2 in an optoisolator,...

Running Message Display

Light-emitting diodes (LEDs) are advantageous due to their compact size, low current consumption, and vibrant colors. This circuit features a running message display where the letters formed by an LED arrangement illuminate progressively. Once all letters of the message are...

LED dimmer circuit

Typical segment display LEDs consume around 25 mA for each segment and should be limited to this current with resistors. For a six-digit display to be current limited, at least 42 series resistors are needed. The brightness of the LEDs...

VU Meter with UAA180

This circuit of measurement of level uses the UAA180 of SIEMENS and a circuit of rectification of precision, round the IC2B. The calibration has become in steps 3db from the one Led in the other, ensuring, a very good rate...

One transistor LED Flasher

This may be the simplest LED flasher circuit you can build, with the notable exclusion of LEDs with integrated flashing circuits. This might be a good replacement for the LM3909 in some applications. Take a close look. Only the emitter...