modified 10 years ago

Transistor half wave rectifier

01:18:08

NPN transistor acts as a half wave rectifier

published 10 years ago

eeveleigh

10 years ago

I don't think this is quite practical because of a few reasons: 1. A lot of BJTs would probably not tolerate 220 V collector emitter voltage without breaking down/being damaged or destroyed. VBE also reaches around -220V so good luck not having that PN junction break down. 2. You are dissipating a peak power of at least 50 W in the BJT (250 mA at ~200 V) So if you wanted to realize this circuit you would need to utilize a pretty specialized power transistor and a large heat sink. It may be more economical to use a transformer and diodes. http://alltransistors.com/crsearch.php?mat=&struct=&pc=50&ucb=0&uce=220&ueb=0&ic=.250&tj=0&ft=0&cc=0&hfe=0&caps=

Aditya07

10 years ago

Thank you for pointing out the impracticality of this setup, It helps a lot.

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