Constant-current power supply based on triode voltage stabilizing circuit

Abstract

The invention discloses a constant-current power supply based on a triode voltage stabilizing circuit. The constant-current power supply is characterized by mainly consisting of a processing chip U, a field-effect transistor MOS1, a polar capacitor C4, a diode D3, a voltage regulating circuit, a constant-current driving circuit, a triode voltage stabilizing circuit and a pulse trigger circuit, wherein the voltage-regulating circuit is connected with the processing chip U; the constant-current driving circuit is connected with a source electrode of the field-effect transistor MOS1 and the processing chip U respectively; the triode voltage stabilizing circuit is connected in series between the voltage-regulating circuit and the constant-current driving circuit; and the pulse trigger circuit is connected with a drain electrode of the field-effect transistor MOS1. Through adoption of the constant-current power supply, an instantaneous high voltage and instantaneous high current generated on an input voltage and input current by external electromagnetic wave interference can be eliminated or attenuated, and transmission of voltage and current is kept stable dynamically, so that a stable voltage and stable current can be output, and normal use of electrical appliances is ensured effectively.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a constant current power supply based on a triode voltage stabilizing 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, whic...

AI Technical Summary

Problems solved by technology

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, which seriously affects people's health. production and life

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