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TN-90 DB Sound Voltage Meter with Backlight for Preceding Electron Tube Biliary Machine of High Precision VU Head Power Amplifier Level Meter

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                  Features:

                  Add backlight board, white LED light source with homogenizer, make light diffuse evenly, solve the problem of LED light pointing, hollow dial bottom color is pure black, after power-on calibration lines and characters transparent green light is very beautiful.

                   
                  Specification:

                  Movable part: moving coil type
                  Pointer Material: Zinc White Copper
                  Pointer color: orange
                  Pointer swing direction: from left to right
                  Length of the pointer: from the center axis to the needle tip 44 +1 mm
                  Width of pointer; 0.45 + 0.05 mm
                  Direction of Use of Meter: Vertical
                  Standard test conditions: temperature 20 C, humidity 70%. If the test results do not differ, the test can also be carried out at room temperature and humidity.
                  Current Sensitivity: The Sensitivity of the Pointer from Zero to Maximum (Full Scale) 960uA + 8%
                  Internal impedance: 650_+10%
                  Insulation impedance: 500V DC plus 50M ohm for meter outer box and electrical circuit. Insulation impedance of meter outer shell and electrical circuit is tested by 500V DC voltage.
                   
                  Package included:

                  1 x VU Panel Meter Audio Power Amplifier Indicator DB Table Level Header

                   
                  Details pictures:

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