Position: Index > Amplifier Circuit >

AN6884 VU Led Level meter for amplifiers

2016-04-19 10:18  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.
Circuit diagram
AN6884 VU Led Level meter for amplifiers circuit
AN6884 VU Led Level meter for amplifiers circuit

The basic component is the complete AN6884 by The AN6884 is a monolithic integrated circuit driving 5 - LED and is capable of logarithmic (dB) bar graph display for input signal. Incorporating high gain rectification amp. Enable to apply AC (VU meter, etc.) / DC (signal meter, etc.) Level meter widely.
The system operates over a wide voltage range - from 3 to 16 volts. The only thing you should consider is the resistor R2, R4 which ranges from 47 - 91 ohms, depending on the supply voltage and the brightness of the LED. The potentiometer P1, adjusts the input level.

AN6884 VU Led Level meter for amplifiers parts
AN6884 VU Led Level meter for amplifiers part's

Select R2, R4 value from the list.

Vcc(V) R(Ω) 8 ~ 12 47 10 ~ 14 68 12 ~ 16 91
AN6884 VU Led Level meter for amplifiers pcb 1
AN6884 VU Led Level meter for amplifiers PCB 1 Features Wide range of operating voltage: Vcc = 3.5V ~ 16V Constant current output: I LED = 15mA Built – in high gain amp.:Gv = 26dB typ. Low noise when LED ON 5 – dot LED bar logarithmic response: -10, -5, 0, 3, 6dB Fewer external components AN6884 VU Led Level meter for amplifiers pcb 2
AN6884 VU Led Level meter for amplifiers PCB 2   Part List: R1, R3 = 10K ¼ Watt R2, R4 = See text ½ Watt C1, C3 = 2,2mF 16V C2, C4 = 10mF 16V P1, P2 = 10K trimmer Led1, … Led10 = LED 5mm Red IC1 = AN6884

Copyright © Notice. All projects described herein, including but not limited to all text and diagrams, are the intellectual property of AUDIO KIT unless otherwise stated, and are Copyright © 2007 – 2014. Reproduction or re-publication by any means whatsoever, whether electronic, mechanical or electro-mechanical, is strictly prohibited under International Copyright laws. The author / editor (AUDIO KIT) grants the reader the right to use this information for personal use only, and further allows that one (1) copy may be made for reference while constructing the project. Commercial use in whole or in part is prohibited without express written authorization from AUDIO KIT and the owner of the copyright in the case of submitted articles.

Copyright © Audio kit amplifier circuit diagrams. All rights reserved.