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02:42:36

Who can explain me,  what's wrong with transistor A? 

published 8 years ago

haidewa

8 years ago

What circuit is it ?

samschill2

8 years ago

Shoshana Rubin

jason9

8 years ago

Three problems. One, the transistor is not configured to have the low resistance needed to supply such high current. Two, it is not supplying the full 9V of voltage because it is an NPN and the way that it is configured. Three, I would recommend putting a small resistor (like 33ohms) at the base or make it a darlington configuration and give it a bigger resistor (like 3.3kOhms) to prevent the transistor from being destroyed by excess current through the base.

jason9

8 years ago

Look at this: http://everycircuit.com/circuit/4937960178057216

VicAMMON

8 years ago

jason9, thank you

2ctiby

8 years ago

See http://everycircuit.com/circuit/6475554040840192

cristchanto08gmailcom

8 years ago

http://everycircuit.com/circuit/5726848228261888

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