SCR Regulated D.C. Power Supply with Power Supply Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12884
Indian Lab Suppliers supplies the SCR Regulated D.C. Power Supply with Power Supply (Product ID: 12884) as part of its electronics engineering lab equipment range. It is a working SCR-regulated DC power supply, variable from 10 to 40 V, built on a board so students can study its open-loop and closed-loop behaviour.
Quick Answer
A half-controlled bridge of two SCRs and rectifiers is fed from a 0-40 V, 500 mA transformer and fired by a 2N2646 UJT relaxation oscillator through a 1:1:1 pulse transformer. Students measure output voltage, regulation and ripple with inductor-input and capacitor-input filters, first open loop and then with closed-loop feedback using shunt-transistor pedestal control or a series-transistor ramp in differential-amplifier mode. Other exercises vary the ramp slope and compensate for line-voltage changes. Internal loads change in 16 steps, and the supply can also feed external loads up to 500 mA.
Key Specifications
| Parameter | Detail |
|---|---|
| Output | 10-40 V DC, continuously variable |
| External load | Up to 500 mA |
| Internal load | 16 steps |
| Power stage | 2 SCRs in bridge with rectifiers; freewheeling diode; transformer 0-40 V, 500 mA |
| Control | UJT 2N2646, 1:1:1 pulse transformer, 3 potentiometers |
| Control supply | 24 V DC regulated; diode bridge and zener |
| Experiments | 7: open and closed loop with L and C filters; ramp slope; line compensation |
| Mains | 230 V ±10%, 50 Hz; ON/OFF switch, fuse and indicator lamp |
| Connections | 4 mm stackable patch cords, 0.5 m |
Where This Is Used
Follows the Study of SCR and A.C. Phase Control with Power Supply (Product ID: 12880) and pairs with the SCR Converters and Reactive Loads with Power Supply (Product ID: 12883) in power-supply design practicals. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
What is the output range?
10 to 40 V DC, continuously variable.
How much current can it supply externally?
Up to 500 mA.
What does closed-loop control change?
Feedback adjusts the firing angle so the output stays steadier as load changes.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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