enter image description here

Here the zener voltage of the zener diode is 3.3V and base to emitter voltage drop is 0.7V. What is the voltage across the load resistor and how to find it?

  • \$\begingroup\$ This appears to be homework with no attempt at a solution. Please edit your question (using the 'edit' link underneath) to make an attempt at explaining how you think the circuit should work and then we can look at some numbers if you are on the right track. \$\endgroup\$ – Transistor Jan 6 at 17:24
  • 2
    \$\begingroup\$ I wonder if there is a real-life use for such a circuit… \$\endgroup\$ – user2233709 Jan 6 at 18:00
  • \$\begingroup\$ Looks like a Darlington arranged to prevent the load voltage from exceeding some maximum voltage. Trivial to work out when that happens, though there will be a soft transition period before the clamped voltage across the load is rock solid. (Or, it could just be a shunt regulator of sorts.) \$\endgroup\$ – jonk Jan 6 at 19:36

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.