Voltage stabilizing circuit of alternating current voltage stabilizer

A technology of AC voltage stabilizer and voltage stabilizing circuit, which is applied in the direction of instruments, adjusting electric variables, control/regulation systems, etc., can solve the problems of low reliability, low control precision, complex circuit design, etc., and achieve high reliability, circuit The effect of simple design and low cost

Active Publication Date: 2015-05-06
长城电器集团浙江科技有限公司
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Problems solved by technology

However, the voltage stabilization circuit of the current AC voltage stabilizer has t

Method used

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  • Voltage stabilizing circuit of alternating current voltage stabilizer
  • Voltage stabilizing circuit of alternating current voltage stabilizer

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Embodiment Construction

[0009] see figure 1 , is the schematic diagram of the power supply circuit of the AC voltage stabilizer voltage stabilizing circuit of the present invention. Such as figure 1 As shown, diode D2, diode D3, diode D4, and diode D5 form a full-wave rectification circuit and filter capacitors C1, C2, C3, C4, and C5, and Zener diode Z2 is connected with resistors R1, R2, R3, and R9 to generate a power signal VBB and VEE; Diode D1 forms a half-wave rectifier circuit and filter capacitors C6, C7, C8, Zener diode Z1, and resistor R12 are connected to generate power supply signals VCC and VDD. Among them, VDD and VEE supply power to the operational amplifier U1A of the voltage stabilization control circuit, VAA supplies power to the voltage signal detection circuit, and VBB and VCC supply power to the voltage stabilization control circuit.

[0010] Please refer to figure 2 , is the principle diagram of the voltage stabilizing circuit of the AC voltage stabilizer voltage stabilizing ...

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Abstract

The invention relates to a voltage stabilizing circuit of an alternating current voltage stabilizer. The voltage stabilizing circuit of the alternating current voltage stabilizer comprises a power input, a power circuit and a voltage stabilizing circuit, wherein the power circuit and the voltage stabilizing circuit are connected in sequence; the voltage stabilizing circuit comprises a voltage signal detection circuit and a voltage stabilizing control circuit; the voltage stabilizing control circuit comprises capacitors C9 and C12, an operational amplifier U1A, resistors R4, R6, R10 and R11, transistors Q1 and Q2 and a direct current motor connecting terminal J2; the voltage signal detection circuit comprises resistors R5, R7 and R8, a voltage stabilizing diode Z3, a diode D6 and an adjustable resistor W1. According to the voltage stabilizing circuit of the alternating current voltage stabilizer, voltage judgment is realized by using a comparator with hysteretic characteristic, so under-voltage and over-voltage adjustment can be accurately realized; the turning direction of a direct current motor is controlled by using the double transistors in a complementary working mode; the entire circuit is simple in design, high in reliability and low in cost.

Description

technical field [0001] The invention relates to the technical field of voltage stabilizers, and more specifically relates to a voltage stabilizing circuit of an AC voltage stabilizer. Background technique [0002] Since the power supply voltage is unstable due to various reasons, especially in some power supply places, the voltage fluctuates greatly, which affects the normal operation of the electrical equipment and may cause damage to the electrical equipment. A voltage stabilizing device with a stable working voltage of the device. Its demand is increasing, and the requirements for its reliability and safety are also increasing. However, the voltage stabilizing circuit of the current AC voltage stabilizer has the defects of low control precision, complicated circuit design and low reliability. [0003] Therefore, prior art urgently needs to have very big progress. Contents of the invention [0004] The technical problem to be solved by the present invention is that, a...

Claims

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Application Information

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IPC IPC(8): G05F1/12
Inventor 余存泰肖义峰章火明卢云强彭昆明
Owner 长城电器集团浙江科技有限公司
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