DC 12V VU Driver Board Audio Power Amplifier Level Meter Front Stage and Rear Stage Power Meter Tube Amplifier Drive Module

Brand Name:icchipcn.com
Condition:New
Type:Voltage Regulator
Model Number:VU driver board
Supply Voltage:DC12V
Dissipation Power:As the description
is_customized:Yes
Operating Temperature:As the description
Application:Computer
Package:TQFP

DC 12V VU Driver Board Audio Power Amplifier Level Meter Front Stage and Rear Stage Power Meter Tube Amplifier Drive Module

Features:

1. Install input low-pass filter circuit to filter out high frequency interference, suitable for harsh power environment (such as car audio system).

2. The output sensitivity is adjustable, suitable for various measuring heads.

3. The most commonly used 12VDC power supply is convenient for vehicle-mounted machines and PC computers.

4. The power supply has reverse polarity protection.

5. With power pointer protection, avoid starting pointer primers and prolong the life of the first watch.

6. Metal film resistance 0.5W, high power margin, to ensure long-term continuous reliable and stable work.

7. Using the audio level to design the imported integrated circuit chip, which contains the square root circuit of dynamic exponential compression (for example: input 1V, output 1V; input 4V, output 2V; input 9V, output 3V), the command is dynamic It is also accurate and the pointer swings moderately, avoiding the shortcomings of small signal pointers not moving and large signal pointer rendering.

8. No separate power supply is required, and electricity can be extracted directly from the original power supply. Compared with TA7318P / TA7332P, the cost of the transformer is reduced, and the installation is more convenient and flexible while taking up half of the chassis space.

The main parameters:

Input sensitivity: input 400Hz audio signal, Fluke 8025B digital multimeter AC mV file measurement, input: 97mV, 39 level meter pointer +3 dB position.

Power supply voltage: DC 12V 0.12A.

Backlight power terminal: DC10-12V 50MA. Used for small bulb backlight power supply.

Drive VU meter, level meter sensitivity: the recommended sensitivity is 500UA, and the internal resistance is 630 ohms. At this time, the damping effect is the best. The damping effect of other specifications of the instrument will be different, and further adjustment is required.

Note: The power supply voltage must be strictly guaranteed to be 12VDC. Although it can work for a short time if it exceeds 12VDC, it will burn out the protection circuit for a long time. Wiring must be carried out, and the live operation damage caused by such man-made faults is not covered by the warranty.

Instructions for use:

1. Input part:

Lin, 0, Rin are audio signal input terminals, suitable for the left, ground, and right channels of CD audio output. Or connect to the front level input terminal selection output terminal, and should not be connected to the front level output terminal or the volume potentiometer output terminal.

2. Output part:

The two + and-terminals on the VU meter side are outputs, which should be connected to the + and-terminals of the two level meters respectively.

Recommended driving type level gauge sensitivity: DC 100 ~ 500 can not exceed 1mA.

On board 2 blue 3296 series 500 ohm potentiometers can adjust the sensitivity of the two headings separately. Rotate clockwise to increase sensitivity.

LA and LB are the backlight power supply terminals, and RA and RB are another group of backlight power supply terminals.

List:

VU driver board X1

Features:

1. Install input low-pass filter circuit to filter out high frequency interference, suitable for harsh power environment (such as car audio system).

2. The output sensitivity is adjustable, suitable for various measuring heads.

3. The most commonly used 12VDC power supply is convenient for vehicle-mounted machines and PC computers.

4. The power supply has reverse polarity protection.

5. With power pointer protection, avoid starting pointer primers and prolong the life of the first watch.

6. Metal film resistance 0.5W, high power margin, to ensure long-term continuous reliable and stable work.

7. Using the audio level to design the imported integrated circuit chip, which contains the square root circuit of dynamic exponential compression (for example: input 1V, output 1V; input 4V, output 2V; input 9V, output 3V), the command is dynamic It is also accurate and the pointer swings moderately, avoiding the shortcomings of small signal pointers not moving and large signal pointer rendering.

8. No separate power supply is required, and electricity can be extracted directly from the original power supply. Compared with TA7318P / TA7332P, the cost of the transformer is reduced, and the installation is more convenient and flexible while taking up half of the chassis space.

The main parameters:

Input sensitivity: input 400Hz audio signal, Fluke 8025B digital multimeter AC mV file measurement, input: 97mV, 39 level meter pointer +3 dB position.

Power supply voltage: DC 12V 0.12A.

Backlight power terminal: DC10-12V 50MA. Used for small bulb backlight power supply.

Drive VU meter, level meter sensitivity: the recommended sensitivity is 500UA, and the internal resistance is 630 ohms. At this time, the damping effect is the best. The damping effect of other specifications of the instrument will be different, and further adjustment is required.

Note: The power supply voltage must be strictly guaranteed to be 12VDC. Although it can work for a short time if it exceeds 12VDC, it will burn out the protection circuit for a long time. Wiring must be carried out, and the live operation damage caused by such man-made faults is not covered by the warranty.

Instructions for use:

1. Input part:

Lin, 0, Rin are audio signal input terminals, suitable for the left, ground, and right channels of CD audio output. Or connect to the front level input terminal selection output terminal, and should not be connected to the front level output terminal or the volume potentiometer output terminal.

2. Output part:

The two + and-terminals on the VU meter side are outputs, which should be connected to the + and-terminals of the two level meters respectively.

Recommended driving type level gauge sensitivity: DC 100 ~ 500 can not exceed 1mA.

On board 2 blue 3296 series 500 ohm potentiometers can adjust the sensitivity of the two headings separately. Rotate clockwise to increase sensitivity.

LA and LB are the backlight power supply terminals, and RA and RB are another group of backlight power supply terminals.

List:

VU driver board X1