2+1pcs TN-90 VU Panel Meters DB Level Header Backlight +Power Driver Board
Parameters
Pointers Material:Zinc white copper
Pointer color:orange
The direction of the pointer swing : left to right
Pointer length : 44± 1 mm from the center axis to the needle end
Pointer width : 0.45 ± 0.05 mm
Overall Size:90mm(L) x 70mm(H)
Display Area:80mm(L) x 45mm (H)
Features
*Standard test conditions temperature: 20 ℃, humidity 70% . Can also be tested under normal temperature and humidity
*The influenza degree pointer at the zero scale to the maximum scale sensitivity of 300uA ± 10% (full scale position) internal impedance :800Ω ± 10%
*Insulation impedance meter outside the box plus the electrical circuit with 500V DC plus 50M ohm meter shell
*Electrical insulation of the circuit impedance is 500V DC voltage test of the insulation value. Pointer to overlap with the zero-scale tolerance of ± 1mm balanced meter using a standard position and tilt 90 degrees to allow the error range of ± 1mm
*pointer to mount the current instant plus three times the full scale current, and slowly reduced to the the electric influenz degree 1/2 reading
*The pointer will return to the scale plate within 1/3 scale friction meter coupled with the current, and slowly increase or decrease to a certain value, indicating the point of error range of ± 1mm,brake instantly plus scale plate 2/3 of the current value of the pointer indicates the location of the time required for a second or less.
Parameters
Pointers Material:Zinc white copper
Pointer color:orange
The direction of the pointer swing : left to right
Pointer length : 44± 1 mm from the center axis to the needle end
Pointer width : 0.45 ± 0.05 mm
Overall Size:90mm(L) x 70mm(H)
Display Area:80mm(L) x 45mm (H)
Features
*Standard test conditions temperature: 20 ℃, humidity 70% . Can also be tested under normal temperature and humidity
*The influenza degree pointer at the zero scale to the maximum scale sensitivity of 300uA ± 10% (full scale position) internal impedance :800Ω ± 10%
*Insulation impedance meter outside the box plus the electrical circuit with 500V DC plus 50M ohm meter shell
*Electrical insulation of the circuit impedance is 500V DC voltage test of the insulation value. Pointer to overlap with the zero-scale tolerance of ± 1mm balanced meter using a standard position and tilt 90 degrees to allow the error range of ± 1mm
*pointer to mount the current instant plus three times the full scale current, and slowly reduced to the the electric influenz degree 1/2 reading
*The pointer will return to the scale plate within 1/3 scale friction meter coupled with the current, and slowly increase or decrease to a certain value, indicating the point of error range of ± 1mm,brake instantly plus scale plate 2/3 of the current value of the pointer indicates the location of the time required for a second or less.
TA7318P VU Meter Driver Circuit Board
Introduction:
The new VU level meter driver board is a perfect replacement for the discontinued TA-7318P driver IC. It has a better driving effect on the meter head, the needle swings quickly, and the response is sensitive, and the output signal is further increased on the basis of the 7318 circuit.
It can drive the meter head that cannot be driven by the previous 7318 circuit. The new style adds a wide range voltage regulator circuit, and the working performance is more stable.
The overall layout of the originals follows the original classic design style, beautiful appearance, exquisite and practical!
And can cooperate with the expansion circuit, increase the peak PEAK indicator function!
It can drive the meter head that cannot be driven by the previous 7318 circuit. The new style adds a wide range voltage regulator circuit, and the working performance is more stable.
The overall layout of the originals follows the original classic design style, beautiful appearance, exquisite and practical!
And can cooperate with the expansion circuit, increase the peak PEAK indicator function!
Parameters:
1. Signal input: The driver board provides two signal input methods, you can choose one of them according to your situation! (Reminder: If the signal is taken at the back end of the volume potentiometer or at the output of the power amplifier, the pointer swing will be controlled by the volume potentiometer, that is, the pointer swings when the volume is large, and the pointer swing is small when the volume is small.)
① LOW, GND, LOW: These are the low-level signal input terminals of the driver board, which are used to connect the audio signals of CD players, computer sound cards, front-end devices, and other audio source equipment. When wiring, LOW, GND, and LOW correspond to: left, Ground and right channels are fine.
① LOW, GND, LOW: These are the low-level signal input terminals of the driver board, which are used to connect the audio signals of CD players, computer sound cards, front-end devices, and other audio source equipment. When wiring, LOW, GND, and LOW correspond to: left, Ground and right channels are fine.
②HIGH, GND, HIGH: These are the high-level signal input terminals of the driver board, which are used to connect the power signal amplified by the power amplifier. The attenuation circuit set in the driver board will attenuate the high-intensity level output by the power amplifier and send it in Driver IC, the attenuation circuit contains the resistors R2 and R3 just mentioned. When connecting the output terminals of the power amplifier, the two HIGH terminals of the driver board are respectively connected to the two red binding posts of the power amplifier and the two black binding posts of the power amplifier. , Select any one of them to connect to the GND terminal of the driver board.
2. Drive output:V+, V-, terminals: This is the driver board for the meter backlight. Two sets of 12V backlight power output terminals are provided. Please pay attention to matching the voltage and the positive and negative directions of the meter light source when connecting.
+, -, terminal: This is the output terminal of the drive board drive meter, 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:
Working voltage: AC/DC 12-15V AC and DC dual-purpose wide-range working voltage (It is recommended to use an independent power transformer or independent winding for power supply!)
Rated power: 3W
4. PCB size: 60*39mm
5. Supplied accessories: the meter head connection line is half a meter, one is divided into two for use.
2. Drive output:V+, V-, terminals: This is the driver board for the meter backlight. Two sets of 12V backlight power output terminals are provided. Please pay attention to matching the voltage and the positive and negative directions of the meter light source when connecting.
+, -, terminal: This is the output terminal of the drive board drive meter, 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:
Working voltage: AC/DC 12-15V AC and DC dual-purpose wide-range working voltage (It is recommended to use an independent power transformer or independent winding for power supply!)
Rated power: 3W
4. PCB size: 60*39mm
5. Supplied accessories: the meter head connection line is half a meter, one is divided into two for use.
2pcs TN-90 VU Panel Meters DB Level Header Detectors Chassis w Backlight
1pcs TA7318P Power Supply Driver Board
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