Posted by Circuits Arena on Thursday, 24 March 2016
Low Ripple Regulated Power Supply Circuit Diagram is the artlcle explaining Low Ripple Regulated Power Supply Circuit Diagram This circuit may be used where a high current is required with a low ripple voltage...
Low Ripple Regulated Power Supply Circuit Diagram
This circuit 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 ).
| 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
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.
