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PRACTICE / Zener voltage regulation

Test the clamp before using it

A 9 V ideal source feeds a 500 Ω series resistor. The output node has a 500 Ω load to ground and an ideal reverse Zener to ground with breakdown voltage 6 V.

Find the output voltage.

Organize the givens & assumptions
  • Supply: 9 V
  • Series resistor: 500 Ω
  • Load resistor: 500 Ω
  • Ideal breakdown voltage: 6 V

The Zener conducts reverse current only at its 6 V ideal clamp; below breakdown it is open. Ignore leakage and forward conduction for this positive output.

  1. A3 V3\ \mathrm V
  2. B9 V9\ \mathrm V
  3. C4.5 V4.5\ \mathrm V
  4. D6 V6\ \mathrm V

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