| ??? 03/26/06 16:16 Read: times |
#113132 - Good Good Responding to: ???'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 |
| Topic | Author | Date |
| Switching an IC off using BJT? | 01/01/70 00:00 | |
| Try using a PNP | 01/01/70 00:00 | |
| Good Good | 01/01/70 00:00 | |
| "expensive" is relative | 01/01/70 00:00 | |
| Of course | 01/01/70 00:00 | |
| Using a MOSFET makes sense | 01/01/70 00:00 | |
Good Info | 01/01/70 00:00 |