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Power Supply with transformer 300V
Hello, i have i power supply of Siemens in one olde machine, and i
have to repair it, but i don't know how. the essencial, the 1 step is transform 220 VAC to 315VDC and then a MOSFET will pulse the 300VDC at 50KHz to a transformer that out 5V at secudary, the problem is that tranformer giver out 8V and don't work.. Anyone can tell me if i change the frequency,. the output volt will decrease? Thanks. |
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