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Subject: Regulated Linear Offline Power supply

Date: 11/07/02 at 7:57 PM
Posted by: David
E-mail: david@project2000.com.au
Message Posted:

G'day fellas,

I have a question to anybody who can help me in regards to the subject title line. I have come quite a ways in designing such a power supply but am still a little uncertain in the topology of the transistors that bypass the regulator. Is is necessary to have a NPN as a booster to the circuit or should I have a string of PNP's in parallel, connected to the input of the regulator. The presence of the NPN would make sense in the desire to boost the current (12.5A for one cycle from the power supply of 100Hz). I have performed some minor tests with smaller power requirements and would seek some confidence in what i'm trying to achieve. I am using bipolar transistors.

If anybody can help it would be appreciative.



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