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Zenor Diode Diode Applications

Zenor Diode Diode Applications. ES230 Jack Ou. The Design of a Cell Phone Charger. c03f01. Still need to be filtered to get a DC voltage. Output of the transformer. c03f02. Short for Positive Voltages and Open for Negative Voltages. c03f03. Behavior of Ideal Diode. Ideal diode:

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Zenor Diode Diode Applications

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  1. Zenor DiodeDiode Applications ES230 Jack Ou

  2. The Design of a Cell Phone Charger c03f01 Still need to be filtered to get a DC voltage Output of the transformer

  3. c03f02 Short for Positive Voltages and Open for Negative Voltages

  4. c03f03 Behavior of Ideal Diode Ideal diode: Vanode>Vcathode: Diode is on Vanode<Vcathode: Diode is off An ideal current experieincing Vanode=Vcathode, carries no current

  5. c03f05 I/V Characteristics A short An Open A diode Vanode>Vcathode: Diode is on Vanode<Vcathode: Diode is off An ideal current experieincing Vanode=Vcathode, carries no current In practice, consider a slightly positive or negative voltage to determine the response of a diode.

  6. c03f07 Example 1

  7. c03f08 Example 2: An OR Gate Realized By Diodes

  8. In Class Exercise

  9. Example 3 c03f09 c03f09

  10. c03f10 A Simple Cell Phone Charger Circuit (R1 is necessary) Another Application: Signal strength indicator

  11. Rectifier Circuit as Signal Strength Indicator

  12. c03f11 A Limiter Circuit Question: How do you modify this circuit so that it passes only Positive portion of the waveform?

  13. c03f13 Different Models of a Diode

  14. Choosing a Diode Model Use the ideal model to develop a quick, rough understanding of a circuit. If the ideal model is not adequate, uses the constant voltage model, which is sufficient for most cases. Occasionally, we will use the exponential model

  15. c03f14 Ideal Model versus Constant-Voltage Model

  16. c03f15 Express ID1 and ID2 as a function of IS1, IS2 and Iin.

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