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High-stability low-pass filtering inverter system based on pulse amplifying and triggering circuit

A technology of trigger circuit and pulse amplification, which is applied in the electronic field, can solve the problem of unstable AC output, etc., and achieve the effect of simultaneous use, stable AC voltage, and simple structure

Inactive Publication Date: 2015-08-19
CHENGDU CHUANGTU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the traditional inverter is easy to output unstable alternating current during the working process, and to provide a high-precision energy-saving detector based on a pulse amplification trigger circuit

Method used

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Embodiment

[0021] like figure 1 As shown, the present invention includes a transformer T1, an inverter circuit, a grounded logic control circuit connected to the inverter circuit, a voltage stabilizer circuit connected to the logic control circuit, and a low-pass filter circuit connected to the voltage stabilizer circuit. The low-pass filter circuit described above is also connected to the primary side of the transformer T1. In order to achieve the purpose of the present invention, a pulse amplifying trigger circuit is also connected in series between the inverter circuit and the voltage-stabilizing circuit.

[0022] Among them, the pulse amplification trigger circuit is the invention point of the present invention, such as figure 2 As shown, it consists of amplifying chip U1, NOR gate A1, trigger chip U2, diode D7, polar capacitor C8, polar capacitor C9, resistor R10 and resistor R11.

[0023] Among them, the resistor R10 is connected in series between the D pin and the SD pin of the ...

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Abstract

The invention discloses a high-stability low-pass filter inverter system. The high-stability low-pass filter inverter system is mainly composed of a transformer T1, an inverter circuit, a logic control circuit connected with the inverter circuit, and a low-pass filter circuit connected with the primary side of the transformer T1. The high-stability low-pass filter inverter system is characterized in that a voltage stabilizing circuit is arranged between the logic control circuit and the low-pass filter circuit; the voltage stabilizing circuit is composed of a triode VT4, a triode VT5, a voltage stabilizer U, a capacitor C2, a resistor R6, a capacitor C1 and the like, wherein the positive electrode of the capacitor C2 passes through a diode D5 and then is connected with the base electrode of the triode VT5, the negative electrode of the capacitor C2 is connected with the logic control circuit, one end of the resistor R6 is connected with the emitting electrode of the triode VT4, the other end of the resistor R6 is connected with the negative electrode of the capacitor C2, the positive electrode of the capacitor C1 is connected with the base electrode of the triode VT5, and the negative electrode of the capacitor C1 is connected with the inverter circuit. The voltage stabilizing circuit is arranged, the alternating voltage output by the system can be more stable, and the load and the system are protected.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a high-stability low-pass filter inverter system based on a pulse amplification trigger circuit. Background technique [0002] The inverter converts DC power into AC power. It is widely used in air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, DVDs, VCDs, computers, TVs, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting, etc. In foreign countries, due to the high popularity of automobiles, you can use the inverter to connect the battery to drive electrical appliances and various tools to work or travel. Connecting home appliances to the output of the power converter enables a variety of appliances to be used in the car. [0003] However, the traditional inverter is prone to output unstable alternating current during the working process, which affects the normal operation of the electrical appliances, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/537H02M5/293H02M1/12
CPCH02M1/12H02M3/158H02M7/537
Inventor 周云扬
Owner CHENGDU CHUANGTU TECH
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