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Switching Regulator Converter Circuit

2015-09-15 17:39  
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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

short-circuit protection, and all necessary control circuitry.

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