Efficient and environmental friendly AC-DC conversion isolation power supply circuit

Abstract

The invention relates to an efficient and environmental friendly AC-DC conversion isolation power supply circuit, which can solve the problem that the prior art has high requirements for resources and is harmful for environmental protection and low in efficiency. Main points of the technical solution are that the efficient and environmental friendly AC-DC conversion isolation power supply circuit comprises an input port and an output port, the input port is connected with an AC power supply, and the output port outputs direct current. The efficient and environmental friendly AC-DC conversion isolation power supply circuit further comprises a positive transforming circuit, a negative transforming circuit, a positive triggering circuit, a negative triggering circuit, a positive conductive switching circuit, a negative conductive switching circuit, a positive filtering circuit and a negative filtering circuit, wherein the positive transforming circuit and the negative transforming circuit transform by adopting a charging and discharging mode. The AC-DC conversion isolation power supply circuit provided by the invention is efficient and environmental friendly. The AC-DC conversion isolation power supply circuit does not need electromagnetic coil transformation, is low in production cost, small in occupied space, has no electromagnetic pollution, and does not have electromagnetic coil loss. Adoption of an optocoupler enables isolation to be effective, and the AC-DC conversion isolation power supply circuit has the substantial effects of low cost, high driving power, high efficiency and environmental protection.

Description

technical field [0001] The invention relates to a power supply circuit, in particular to an efficient and environment-friendly AC-DC conversion isolation power supply circuit. Background technique [0002] AC power supply, that is, AC power supply, is generally 220V input AC power, and 220V input AC power is introduced in the homes of ordinary residents, but at present, many electrical appliances need to use DC power, and also require a large current, so the development of a The power supply circuit of AC-DC conversion is very common. Of course, at present, the transformer part of the AC-DC conversion circuit needs to use electromagnetic coils for voltage transformation, but if electromagnetic coils are used for voltage transformation, there will be the following problems: Higher production cost is required for high voltage, and it needs to occupy a large space; secondly, there will be certain electromagnetic pollution when using electromagnetic coil for voltage transformati...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that electromagnetic coil voltage transformation requires high production cost and needs to occupy a large space, and the use of electromagnetic coil voltage transformation will cause certain electromagnetic pollution, and the use of electromagnetic coil voltage transformation will also cause relatively high production costs. To solve the problem of large loss, provide an efficient and environmentally friendly AC-DC conversion isolated power supply circuit

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