VU Meter Driver Board Power Amplifier DB Level Meter Drive Circuit Module Replace TA7318P

VU Meter Driver Board Power Amplifier DB Level Meter Drive Circuit Module Replace TA7318P

Description:
The new VU level meter driver board is a perfect replacement for the discontinued TA-7318P driver IC. It has a better effect of driving the meter, and the pointer oscillates quickly with sensitive response. It further increases the output signal on the basis of the 7318 circuit, and can drive the meter which previous 7318 circuit cannot drive. The new driver board adds a wide range voltage regulator circuit, and its working performance is more stable. The overall layout follows the original classic design style, beautiful appearance, exquisite and practical! And it can cooperate with the expansion circuit to increase the peak indicator function.

Instructions for Use:
1.Signal input: The driver board provides two signal input methods, you can choose any one according to your need. (Note: If the signal is taken at the back end of the volume potentiometer or the output of the power amplifier, the pointer swing will be controlled by the volume potentiometer, that is, the volume of the pointer is large when the volume is large, and the amplitude of the pointer is small when the volume is small.)

① LOW, GND, LOW: This is the low-level signal input terminal of the driver board, used to connect the audio signals of CD players, computer sound cards, preamp, and other audio source devices. When wiring, LOW, GND, LOW are respectively correspond to left, ground and right channels.
(Adjust the two potentiometers on the driver board to control the pointer swing. If the signal is fully open, the pointer swing does not reach your expected value, or if the volume becomes low, you can remove R2, R3 resistor on the driver board. R2 and R3 are used to attenuate the ground when the drive board is connected to a high-level input signal. It is only used when the high-level input is used, because there is no way to determine which signal input you use.

②HIGH, GND, HIGH: This is the high-level signal input terminal of the driver board, used to connect the power signal amplified by the power amplifier. The attenuation circuit built in the driver board will attenuate the high-intensity level of the power amplifier output and send it into In the driver IC, the attenuation circuit contains the resistors R2 and R3. When connecting the output terminals of the amplifier, the two HIGH terminals of the driver board are respectively connected to the two red terminals of the amplifier and the two black terminals of the amplifier. , Select any one of them to connect to the GND terminal of the driver board.

2. Drive output:
①V +, V- terminal: this is the driver board backlight of the meter, providing two sets of 12V backlight power supply output terminals. Please pay attention to match the voltage and positive and negative directions of the light source of the meter when connecting.
②+, - terminal: this is the output terminal of the driver board, used to drive the meter, which are respectively connected to the “+” and “-” terminals of the two level meters. Pay attention to the positive and negative directions when connecting.

3. Power supply parameters:
Operating voltage: AC / DC 12-15V, AC / DC wide-range operating voltage (It is recommended to use an independent power transformer or independent winding for power supply).
Rated power: 3W

4. PCB Size: 60 * 39mm

Package List:
1 x Driver Board
1 x Connection Cable