Feature

●INTEGRATED CIRCUIT CHIP: Designed for audio level testing and design of an integrated circuit chip, contains the square root of a dynamic index compression circuit (example: input 1V, 1V, input 4V, 2V, input 9V, 3V)
●Flexible installation: reduce the cost of a transformer compared to TA7318P / TA7332P, while the housing takes up less space inside, the installation is more convenient and flexible
●Adjustable output sensitivity: Enter the installation of a low-pass filter circuit to filter out high frequency interference, power supply for harsh environments (e.g. car radio). Adjustable output sensitivity for a variety of specifications header
●Reliable and stable: with reverse polarity protection of the power supply. Provide excitement hand protection against the boat pointer base, extend the life of the header, use 0.5 W metal film resistors, a large power range to ensure long-term reliable and stable operation
●No independent power supply required: no independent power supply required, power supply cable directly from the original, the most common 12V power supply, easy to use on vehicle devices and PC computers


Description

Specification:
Product Type:VU Meter Driver Board DB Audio Level Meter
Input sensitivity: 400 Hz audio input signal with 8025B digital multimeter range.
Measurement AC mV, input: 97mV, 39 levels up to + 3dB position.
Power supply voltage: DC12V 0.12A.
PCB size: 63 x 52 x 20 mm / 2.48 x 2.05 x 0.79 inches.
Power supply connections for backlight: available from DCl0 to 12V 50MA. Power for small bulbs
Backlight
Drive VU meter, level meter sensitivity: recommended 500uA sensitivity, 630 ohms.
Resistance At this time, the damping effect is best, the other specifications of the level meter differ in the damping effect and need to be further adjusted.

Instructions:
1. Input part:
Lin, 0, Rin, is an audio signal input port for the CD audio output that is connected to the left
and to the right channel. Or an output port connected to the first input port
Selection level, the former should not be connected to the power amplifier output or volume
Potentiometer
2. Output part:
The two "+" and "—" terminals on the side of the VU meter should each be connected as an output to the "+" and -" terminals of a two-stage gauge.
Sensitivity recommendation of the controllable level meter: DC 100uA to 500uA. Do not exceed 1mA.
Board 2500 ohm blue 3296 series potentiometer can adjust the sensitivity of the two
Separate header. Clockwise, sensitivity can be improved.
LA, LB are the power supply connections for backlight, RA, RB is the other set power supply of the backlight
Supply clamp