Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
Bruce Grenade
03/26/06 09:16
Read: 401 times
Mckinney


 
#113132 - Good Good
Responding to: Bruce Grenade's previous message
Thanks for the explanation Russell. I did a quick simulation with a PNP and it works perfectly and I understand why the PNP is a better choice in this situation..

Why do I never see engineers use BJT's for switching off supplies? I've seen many times where an engineer specs an expensive MOSFET in situations where the "On resistance" doesn't matter and the circuit they are switching off is well below general purpose current levels.

Thanks
Bruce

List of 7 messages in thread
TopicAuthorDate
Switching an IC off using BJT?      Bruce Grenade      03/25/06 21:36      
   Try using a PNP        Russell Bull      03/26/06 00:49      
   Good Good      Bruce Grenade      03/26/06 09:16      
      "expensive" is relative      Erik Malund      03/26/06 10:55      
         Of course      Bruce Grenade      03/26/06 11:47      
   Using a MOSFET makes sense        Kai Klaas      03/26/06 16:28      
      Good Info      Bruce Grenade      03/26/06 17:03      

Back to Subject List