DC 12V VU Meter Audio Power Amplifier Level Meter Driver Board Drive Module

DC 12V VU Meter Audio Power Amplifier Level Meter Driver Board

Drive Module With Isolation

Descrtion:

1, Using special designed for audio level testing ed integrated circuit chs, embedded square root dynamic exponential compreion circuit(example: input 1V, output 1V; input 4V, output 2V; input 9V, output 3V), give attention to both dynamic and precision instruction, the pointer swings moderately, Avoid the pointer do not move in small signal and hitting to the bottom at the large signal.

2, Power supply uses DC 12V or AC 10V , Don't need independent power supply, it can directly connect to transistor amplifier or car amplifier power supply.

3, The circuit design is perfect with the following functions:

◆ Inputs are installed two independent s to isolation, minimize the impact on the system.

◆ Output sensitivity left and right channels independently adjustable, applicable to a variety of specifications meter.

◆ With pointer protection function at power-on moment, to prevent the boot pointer from hitting the bottom, extended the meter life.

Parameters:

Input Sensitivity: Input 400Hz audio signal, using Fluke 8025B digital multimeter AC mV position to measured, input terminal: 650mV, 39 level meter pointer is 0dB position.

Power Supply: 12V DC or 10V AC

Board Size: 72mm x 44mm

Mounting Hole Distance: 62mm x 37mm

Backlight Power Supply Terminal: Can provide DC 10V 50mA power supply, as small bulb backlight power supply.

Drive VU Meter Sensitivity: Recommended 500UA, In this case, the damping effect is better, and the damping effect of other meter levels will be different.

Packing List:

1pcs x VU Meter Driver Board

2pcs x Connection wires

About shping
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