Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. dropcheck

    NPN Transistor & welcom

    thanks for the tips. I've taken the scope and took some measurments, just need to run some more calcualations. Been using this project increase my knowledge of Pspice. Looks like my "load" requires more current than power supply can produce at the lower input voltages. not for a class. Sort...
  2. dropcheck

    NPN Transistor & welcom

    I've contacted to manufacture and waiting to hear back. another question: What techniques could I use to measure the currents (Ib, Ic, Ie) I've used my Fluke meter and measured Ib = ~7uA and Ic=Ie = 7mA. I contacted Fluke to ask about accurance because the signal is phone simulator (19Hz...
  3. dropcheck

    NPN Transistor & welcom

    Hello everyone. New here and I wanted to say Hi first of all. 2ND: Working with zener diode to bias an NPN transistor as a power supply. Believe the transistor is used to increase current to drive circuit. At normal input voltage (30Vdc) everything works fine. At lowever voltages (20Vdc) the...
Back
Top