A circuit structure and power supply method compatible with intermittent power supply and continuous power supply

Abstract

The present invention discloses a circuit structure compatible with intermittent power supply and continuous power supply. A collector of a triode P1 is connected with one end of a capacitor C1, an emitter of a triode P2 and a resistor R3, the other end of the capacitor C1 is grounded, the other end of the resistor R3 is connected with a resistor R4 and a base of a triode N1, the other end of theresistor R4 is connected with the emitter of the triode N1 and is grounded; the collector of the triode N1 is connected with the base of the triode P2 through a resistor R5, and the collector of the triode P2 is connected with an internal power supply end; and the anode of the diode D4 is connected with a power supply control end through a resistor R8, and the anode of the diode D4 is connected with the emitter of the triode P2. The power supply method of the circuit structure compatible with intermittent power supply and continuous power supply only needs to change the voltage of the power supply control end to switch between two modes of the intermittent power supply and the continuous power supply so that the operation is convenient and the applicability is wide.

Description

technical field [0001] The invention belongs to the field of circuit structures, in particular to a circuit structure and a power supply method compatible with intermittent power supply and continuous power supply. Background technique [0002] The reliable design of internal power supply in switching power supply or electronic system is the basis for its stable operation. The loss of the power supply line directly affects the conversion efficiency of the system, especially in low-power switching power supplies or electronic systems. For a long time, reducing the power consumption of the power supply line is a direct and effective way to improve the conversion efficiency of the system. The existing power supply lines are roughly divided into the following categories: [0003] figure 1 It is an existing stable voltage power supply line, which is composed of a voltage regulator tube Z1, a diode D1, a triode N1 and a current limiting resistor R1. When the circuit is working...

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that the power supply voltage at the Vcc terminal is unstable and changes with the input voltage, and the control circuit continues to work, which has a certain impact on the efficiency and reliability of the system.

The existing power supply circuit has a simple structure, but they all have a common disadvantage, that is, the power supply circuit itself has a large loss

Switching power supply or electronic system sometimes works in an intermittent state, and its working method is that the internal power supply remains unchanged, and the system is intermittently working through the internal loop control method. At this time, the power supply loss becomes a continuous loss

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