Transistor

274

03:43:44

 Not exactly sure why  increasing  the resistance  via whipe position causes leds to blow. I though  it would  kind of   close the gate on the  pnp bjt causing the  leds to actually dim .. unless with a pnp it's in reverse and more resistance  causes more currebt to flow? 

published 4 years ago

wajdi

4 years ago

Hi, the pnp when you close emitter to collector with a little drope (minor so you can ignore for the moment). Led support only 2v and when you think increasing the resistance in this circuit happen you short + to - and close e to c you let transistor pass more power. So too bad in the real life... Change the pnp to npn. You have to add resistance to the base and one to the led's

j5892000

4 years ago

Ah I see . Thank you

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