Switching Regulator Converter Circuit

Posted on Sep 25, 2012

The Max650 switching regulator produces a regulated 5 V from large negative voltages, such as the -48 V found on telephone lines. The resulting power supply operates with several external components, including a transformer, and it delivers 250 mA. The device includes a 140-V 250-mA pnp transistor,

Switching Regulator Converter Circuit
Click here to download the full size of the above Circuit.

short-circuit protection, and all necessary control circuitry.

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