Showing posts with label ripple. Show all posts
Showing posts with label ripple. Show all posts
Friday, September 5, 2014
Low Ripple Regulated Power Supply Wiring diagram Schematic
This schema may be used where a high current is required with a low ripple voltage (such as in a high powered class AB amplifier when high quality reproduction is necessary ).
Low Ripple Regulated Power Supply Circuit Diagram
PARTS LIST | |
| R1 | 2.2KΩ 1W |
| R2 | 56Ω 1W |
| R3 | 1oKΩ 1W |
| C1 | 1000µF 63V |
| C2 | 100µF 50V |
| C3 | 470µF 50V |
| D1, D2, D3, D4 | 6A Bridge Rectifier |
| D5 | 500mA Zener Diode (see description) |
| Q1 | 2N3055 |
| Q2 | 2N3054 |
Q1, Q2, and R2 may be regarded as a power darlington transistor. D5 and R1 provide a reference voltage at the base of Q1. D5 should be chosen thus:
D5=Vout-1.2
D5=Vout-1.2
C2 can be chosen for the degree of smoothness as its value is effectively multiplied by the combined gains of Q1/Q2, if 100µF is chosen for C2, assuming minimum hef for Q1 and Q2,
C=100×15(Q1)×25(Q2)
=37000µF.
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