Automatic Switching Circuit of Voltage Doubler Rectification and Half-wave Rectification

Abstract

An automatic switching circuit for double voltage rectification and half-wave rectification comprises a voltage detecting module, a circuit switching module and a dual voltage rectifying module. An AC voltage of 110 V / 220 V can be converted into a DC voltage of about 300 V. Compared with a traditional switching power supply solution, a lower cost and a smaller size can be achieved, and thus the automatic switching circuit is very practical.

Description

technical field [0001] The invention relates to a voltage stabilizing circuit, in particular to an automatic switching circuit for double-voltage rectification and half-wave rectification applied to 110V / 220V dual-purpose electronic products. Background technique [0002] At present, there are generally two types of voltages used in indoor electricity in various countries in the world, namely 100V-130V and 220V-240V. 100V ~ 130V is classified as low voltage, such as the United States, Japan and other countries use low voltage. 220V ~ 240V is classified as high voltage, such as China and most European countries use high voltage. When designing electronic products, to adapt to the two voltage categories at the same time, it is necessary to design two circuit products, or use a switching power supply solution, but this circuit is complex and expensive. Contents of the invention [0003] Based on this, an automatic switching circuit for voltage doubling rectification and hal...

AI Technical Summary

Problems solved by technology

When designing electronic products, to adapt to the two voltage categories at the same time, it is necessary to design two circuit products, or use a switching power supply solution, but this circuit is complex and expensive

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