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Voltage regulating type constant-current power source based on pulse trigger circuit

A technology of pulse triggering and voltage adjustment, which is applied in the electronic field, can solve problems such as output voltage and current instability, and achieve the effects of improving load capacity, improving stability, and avoiding damage

Inactive Publication Date: 2016-09-28
CHENGDU SAIPUQI TECH CO LTD
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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 defects of unstable output voltage and current in the electrical power supply in the prior art, and provide a voltage-adjustable constant-current power supply based on a pulse trigger circuit

Method used

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  • Voltage regulating type constant-current power source based on pulse trigger circuit
  • Voltage regulating type constant-current power source based on pulse trigger circuit
  • Voltage regulating type constant-current power source based on pulse trigger circuit

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Embodiment

[0022] Such as figure 1 As shown, the present invention is mainly composed of a processing chip U, a field effect transistor MOS1, a resistor R6, a polar capacitor C4, a diode D3, a comparison amplifier circuit, a current detection circuit, a voltage adjustment circuit, a constant current drive circuit, and a pulse trigger circuit.

[0023] During implementation, the negative pole of the polarity capacitor C4 is connected to the gate of the field effect transistor MOS1 , and its positive pole is connected to the EXT pin of the processing chip U. The N pole of the diode D3 is connected to the drain of the field effect transistor MOS1 and then grounded, and its P pole is connected to the VSS pin of the processing chip U. The voltage adjustment circuit is connected with the processing chip U. The comparison amplifier circuit is connected in series between the voltage adjustment circuit and the VDD+ pin of the processing chip U. The current detection circuit is connected in seri...

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PUM

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Abstract

The invention discloses a voltage-adjustable constant-current power supply based on a pulse trigger circuit, which is characterized in that it mainly consists of a processing chip U, a field effect transistor MOS1, a polar capacitor C4, a diode D3, a voltage adjustment circuit, and a constant-current drive circuit. A comparison amplifier circuit connected in series between the voltage adjustment circuit and the VDD+ pin of the processing chip U, a pulse trigger circuit connected to the drain of the field effect transistor MOS1, and a pulse trigger circuit connected in series between the drain of the field effect transistor MOS1 Between the current detection circuit composition. The present invention can eliminate or attenuate the instantaneous high voltage and instantaneous high current of the input voltage and current due to external electromagnetic wave interference, so that the transmission of voltage and current can be dynamically kept stable, thereby ensuring that the present invention can output stable voltage and current, and Effectively ensure the normal use of electrical appliances.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a voltage-adjustable constant-current power supply based on a pulse trigger circuit. Background technique [0002] With the continuous development of modern technology, there are more and more types of electrical appliances, which have become an indispensable necessity in people's lives. When people choose a certain electrical appliance, they pay more attention to whether the working performance of the electrical appliance is stable, and the stability of the electrical appliance depends on whether the output voltage and current of the power supply used by the electrical appliance are stable. However, the current power supply used by electrical appliances has the problem of unstable output voltage and current due to the interference of external electromagnetic waves. Often, the voltage and current are too high or too low, which leads to the failure of normal use of electrical appliances...

Claims

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Application Information

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IPC IPC(8): G05F1/56
CPCG05F1/56
Inventor 不公告发明人
Owner CHENGDU SAIPUQI TECH CO LTD
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