Power control module power-supply anti-error circuit

Abstract

The invention relates to a power supply control module power supply error prevention circuit with a voltage stabilizing function. The power supply control module power supply failure prevention circuit includes a clamping module, and the clamping module includes a clamping triode, a voltage stabilizing diode and a bias resistor. In the present invention, when the power supply primary auxiliary winding induces a peak voltage, the peak voltage is applied to the Zener diode through the bias resistor to make the Zener diode work in a stable state, so that the voltage input terminal voltage of the power control module is clamped at a fixed value. In this way, it not only avoids the situation that the power supply control module is shut down and the power circuit stops working due to abnormal conditions such as sudden changes in the input AC voltage source in the power circuit or a sudden increase in the load of the power circuit, but also avoids the occurrence of power supply circuits due to spike voltages. The occurrence of damage to the half-wave rectifier diode due to the action.

Description

technical field [0001] The invention relates to a power supply control module power supply error prevention circuit, in particular to a power supply control module power supply failure prevention circuit with a voltage stabilizing function. Background technique [0002] In the prior art, usually, the power supply circuit of the power control module controls the power control module to output a driving pulse of a certain frequency to realize the normal operation of the power circuit. However, if there is a sudden change in the AC voltage source in the power circuit or a sudden increase in the load of the power circuit, the voltage induced by the primary auxiliary winding of the power supply circuit of the power control module will have a peak at the half-wave rectifier diode, and If the peak voltage input to the power control module of the power supply circuit of the power control module exceeds the upper threshold voltage of the power control module, the power control module...

AI Technical Summary

Problems solved by technology

However, when the half-wave rectifier diode produces a large reverse loss, the total loss in the power supply circuit of the power control module will become very large, which will lead to an increase in temperature in the power supply circuit of the power control module, which is easy to burn out the half-wave rectifier diode , causing the function of the power supply circuit of the power control module to fail

Images