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Author Topic: more problems with a transistor and pulse  (Read 2376 times)

jasonspinmaster

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  • Posts: 25
more problems with a transistor and pulse
« on: February 08, 2008, 06:23:46 PM »
hi all. i need your help again please. ::)
the problem is i am getting a pulse but the the transistor is staying on, and not switching fully on, and  fully off like a switch..
 i am putting 0.12volts from the optic sensor (OPB876) into the small transistor (2N3904)and getting 10.06 volts from the collector
 i am using a 2N3055 as drive transistor

12 volts motor bike battery ( is at 10.06 volts at the moment)
 i have tryed place a 1k to 5k resistor from base to emitter but no luck
 emitter read 0.00volts ???