diode circuit

2. Rectifier
Circuit

3. Tin
Half-Wave Rectifier
Cause of ripple: the capacitor is discharged for almost an entire period.

4. inversion
Ripple Reduction: Do not allow the capacitor to discharge so frequently

5. If Vin >0, D1 and D2 are off.
If Vin <0, D1 and D2 are on and
Vout>0.

6. If Vin >0, D1 and D2 are on,
Vout>0.
If Vin <0, D1 and D2 are off.

7. Inverting
Non-Inverting

8. Alternative Drawing
Inverting Non-InvertingFull-Wave A.K.A. Bridge Rectifier

9. Vout=-Vin-2VD, on Vout=Vin-2VD, on

10. |Vin|<2VD,on

12. Modification:
1.Turn-on voltage
2.1/2 to account for inversion of negative
peaks.

13. VB=VD,on
VA=VP
VAB=VP-VD,on
Maximum reverse voltage is approximately Vp
Vp is the amplitude of Vin

14. A reverse diode voltage
must sustain larger reverse bias voltage

18. Limit the signal amplitude at a suitable point in the receiver

22. Electronic systems typically provide a global supply
voltage: 3V
Design of some circuits will be simplified if they from
a higher supply voltage.

23. Floating Capacitor Capacitor Divider

24. Ideal diode.
Vout pinned to 0 V
Positive charges begin to leave the left
Plate of C1, turning D1 off.
C1 is now a floating capacitor

27. Peak Detector0 to 2Vp waveform

28. Application:
We may need to shift the average level of a signal up
and down because the subsequent stage (e.g. an amplifier)
may not operate properly with the present dc level.

31. CK is 1: I1=1, diodes are shorted, and
Vin=Vout.
CK is 0,diodes are off, charges are stored
across C1.