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Pressure circuit device selection?

Hardware design
七月 14, 2020 by Perry 409

The 220V mains is rectified by a full bridge after a 1:1 transformer. The output DC voltage needs a DC voltage of about 300V. How should I stabilize the voltage? I don't understand this aspect. I saw that there are two WY1 voltage regulators in series. My current requirement is at least 3A.

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Marion 发表于 July 14, 2020

3A, the current is a little big. If the regulator tube is used, the loss should also be very serious. It is recommended to design the circuit with a step-down DCDC.

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Howard 发表于 July 14, 2020

In the case of bridge rectification, the voltage should be around 300v. If the landlord suspects that the output is too high, the secondary side can have slightly fewer turns.

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Renata 发表于 July 14, 2020

Boost boost circuit! Or change the transformer turns ratio.

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