10kV high voltage sound toner ----- ElectroScope

Keywords: 10kV high voltage sound toner First, product introduction High-voltage electrical appliances are a special tool for detecting whether high voltage electrical appliances are charged by power plants and substations. YD1-10 10KV high pressure socket type acoustic electrical electrical appliance use voltage: high pressure AC4KV ~ 10kV, low voltage AC220V-420V. The electrical appliance design is small, and the circuit housing is fully closed. The size is 66mmx wide and 33mmm high. It has seven telescopic tubes. The outermost telescopic tube diameter is φ20mm, which includes circuit housing, and test power. Touch, the total length of the handle is 920mm. The electrostatic appliance is equipped with a leather case to be hanging on the belt, which is convenient to carry, the operating voltage is 4.5V, supplied from 3 SR44 silicon oxide battery, circuit static current is 10μA, one red light-emitting diode on the electrical electronics case It will flash at a certain frequency, and the buzzer on the outer casing also makes a alarm sound at a certain frequency, and the operating current of the circuit is 22mA. Second, work principle The author's schematic is shown in Figure 1. The circuit mainly uses TC4011BP 4 2 inputs and non-door integrated circuits, tested circuits, test input circuits, oscillation circuits, luminescent and alarm circuits. The circuit design is reasonable. The input of TC4011BP is a common point for the test circuit and the test contact input. When manually press the test button or when the contact is gradually adjacent to the high voltage power supply, the foot is high, and the heel is high. Make the unveiled, 4 foot potential, at 4 legs and R2 and C2, R4 can measure the sawtooth wave, and the circuit is triggered. The oscillating circuit is very small, only one triode, a luminous tube, an HA buzzer (not using piezoelectric ceramic sheet). The HA buzzer issues alarm sound, and the oscillation frequency is 1.2kHz, while the light emitting diode is flashing in this frequency.

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