Dual-power supply switching circuit assisting solar power supply

Abstract

The invention discloses a dual-power supply switching circuit assisting solar power supply. The circuit comprises a first power supply input terminal, a second power supply input terminal, a breakdown diode, an N-type triode and an N-channel transistor. The first power supply input terminal is connected to a load and is connected to a cathode of the breakdown diode. An anode of the breakdown diode is connected to a base electrode of the triode. An emitting electrode of the triode is grounded and a collector electrode is connected to a grid electrode of the transistor. The grid electrode of the transistor is also connected to the second power supply input terminal. A drain electrode of the transistor is connected to the second power supply input terminal. A source electrode of the transistor is connected to the load. A power supply connected to the second power supply input terminal only works when a power supply connected to the first power supply input terminal is in an attenuation state, which means that the power supply connected to the first power supply input terminal under an abnormal state is supplemented through the second power supply input terminal.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a dual power supply switching circuit for assisting solar power supply. Background technique [0002] With the development of electricity, the application of various electric energy is more and more extensive, and the power supply, as the source of power supply, has become an indispensable part of the application of electric energy. With the emergence of various electrical appliances, the digitization of social life, and the increasing consumption of electricity for citizens and industries, in order to ensure sufficient power supply, various power generation devices and auxiliary power sources emerge in endlessly. However, due to technical limitations, it is difficult for these auxiliary power sources such as solar power supply circuits to ensure the stability of the power supply voltage, which requires timely supplementation by stable power sources such as commercial power when...

AI Technical Summary

Problems solved by technology

However, due to technical limitations, it is difficult for these auxiliary power sources such as solar power supply circuits to ensure the stability of the power supply voltage, which requires timely supplementation by stable power sources such as commercial power when the auxiliary power supply is unstable.

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