pnp tansistor problem(2n3906)

Status
Not open for further replies.

daredavel

New Member
How can you determine if the transistor is broken? without the data sheet, how can you determine the right pin assignment of a pnp transistor? a simple experiment about the transistor to know which is the emitter, base, collector? Thank you!!
 
thank you sir! do you know a simple circuit experiment to know if the transistor is ok or not? maybe to lit up a LED.. thank you sir!
 
Hook a load resistor (about 1K) from collector to negative supply set to ~10V.
Hook positive supply to emitter, call that ground.
Hook base to neg supply through a 47K current limiting resistor.
The collector should switch from ground to negative as the base resistor is connected/disconnected.

If it works, the β is at least 47K/1K.
 

Attachments

  • TestPNP.png
    28.6 KB · Views: 131
Last edited:
Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…