SCR Converters and Reactive Loads with Power Supply Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12883
Indian Lab Suppliers supplies the SCR Converters and Reactive Loads with Power Supply (Product ID: 12883) as part of its electronics engineering lab equipment range. It shows how SCR bridge converters behave with resistive, inductive and capacitive loads and why simple trigger pulses can fail under reactive loads.
Quick Answer
A UJT relaxation oscillator with resistance ramp control drives the SCRs through three 1:1:1 pulse transformers. With a reactive load on the half-controlled bridge (two SCRs and two diodes), students first see the limits of plain UJT triggering, then add two auxiliary SCRs wired as a pulse amplifier and extender to give longer gate pulses. Further experiments cover the freewheeling-diode action in the half-controlled bridge and a fully controlled four-SCR bridge in converter mode. R, L and C loads can be used alone or combined, and a mains transformer gives 0-12 V, 100 mA (two outputs) and 0-32 V, 500 mA. The converter output can also feed other experiments.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiments | UJT triggering limits; extended-pulse triggering; half-controlled bridge with freewheeling diode; fully controlled bridge |
| Bridges | Half-controlled (2 SCRs + 2 diodes); fully controlled (4 SCRs) |
| Trigger | UJT relaxation oscillator; 2 auxiliary SCRs as pulse amplifier/extender; 3 pulse transformers 1:1:1 |
| Transformer outputs | 0-12 V 100 mA; 0-12 V 100 mA; 0-32 V 500 mA |
| Loads | Resistive, inductive and capacitive, singly or combined |
| 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
Used with the Effect of free wheeling diode in Single phase Fully-Controlled Bridge Converter with Power Supply (Product ID: 12909) and the Single phase Half Controlled Symmetrical & Asymmetrical Bridge Converter with Power Supply (Product ID: 12897) in converter practicals. An oscilloscope is needed to view the load and gate waveforms. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
Why does an inductive load need longer gate pulses?
Load current rises slowly, so a short pulse can end before the SCR current passes its latching level.
What does the freewheeling diode do?
It carries the inductive load current when the supply reverses, improving the output.
Which load types are available?
Resistive, inductive and capacitive, alone or in combination.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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