Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Six LED Bar Power Indicator

Six LED Bar Power Indicator

This device, connected to the loudspeaker output of an audio amplifier, will indicate the instantaneous output power delivered to the loudspeakers by means of six LEDs illuminating one after another by voltage values increasing little by little, providing the visual impression of a luminous bar or column, increasing and decreasing in height following the increase and decrease of the signals level.
The input signal is first rectified by D1 and then sent to six different voltage dividers, one for each LED. In this way, the indication provided by the LEDs illumination of this “Power Display”, will be related to the instantaneous power sunk by the whole loudspeaker cabinet

Six output power levels are displayed by the LEDs in a 2W – 80W range (no setup required). Each nominal power level indication into 8 Ohms load is reached when the respective LED illuminates at full brightness

The output power indicated by each LED must be doubled when 4 Ohms loads are driven.
The circuit can be adapted to suit less powerful amplifiers by reducing the number of LEDs and related voltage dividers..
LEDs of any dimension can be used, but rectangular shaped devices will be more suitable to be compacted in bars or columns..
For a stereo amplifier, two identical circuits are required.

Visit Here for more.







 

More Articles to Read

CTCSS fingerprinting: A method for transmitter identification
CTCSS fingerprinting: A method for transmitter identification
TI DLP® Pico™ Technology for Aftermarket Head-up Displays
TI DLP® Pico™ Technology for Aftermarket Head-up Displays
Brute force computation for cheap log digital potentiometer
Brute force computation for cheap log digital potentiometer
Smart "Homer"
Smart "Homer"
A DIY Segway-style vehicle
A DIY Segway-style vehicle
Superbeta transistors inside: Die photos and analysis of the LM108 op amp
Superbeta transistors inside: Die photos and analysis of the LM108 op amp
Peeqo is a desktop bot that communicates through GIFs
Peeqo is a desktop bot that communicates through GIFs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Serial seven segment LED display shield
Serial seven segment LED display shield
G-code controlled drawing plotter
G-code controlled drawing plotter

Top


Shares