Three Phase Thyristorised AC Regulator with Triggering Circuit Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12939
Indian Lab Suppliers supplies the Three Phase Thyristorised AC Regulator with Triggering Circuit (Product ID: 12939) as part of its electronics engineering lab equipment range. It is a board for studying phase-angle control of a three-phase AC load with six thyristors and their complete firing electronics.
Quick Answer
The power stage is a three-phase thyristorised AC regulator feeding a resistive load. Three identical firing cards, one per phase, each hold a zero crossing detector, integrator, comparator and pulse generator and set the firing angle of the positive-group thyristors; a fourth card works with them to fire the negative group. One potentiometer sets the firing angle, and six driver circuits with pulse transformers isolate the gate pulses. Digital AC meters read the load voltage and current as the angle is changed.
Key Specifications
| Parameter | Detail |
|---|---|
| Power circuit | Three-phase thyristorised AC regulator with R load |
| Firing cards | 3 identical cards (zero crossing detector, integrator, comparator, pulse generator) plus 1 card for the negative group |
| Firing angle control | Potentiometer |
| Gate drive | 6 driver circuits with pulse transformers, high-frequency gated firing |
| Transformers | Three 415:100 V, 1 A units, with 6 V AC for triggering |
| Control supplies | ±12 V at 500 mA and 5 V at 500 mA, IC regulated |
| Switching and protection | Three-pole power contactor with push-to-ON switch; four-pole MCB |
| Meters | Digital AC voltmeter 3½ digit, 0–200 V; digital AC ammeter 3½ digit, 0–2 A |
Where This Is Used
Used in power electronics laboratories to plot load voltage against firing angle for a three-phase AC regulator. The 415:100 V transformers mean a 415 V three-phase input, so wire it with an earth and work under supervision. A related trainer is the Three Phase AC Voltage Controller (Product ID: 12965). Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
How is the firing angle set?
With a single potentiometer that acts on all three phase cards.
What load is used?
A resistive (R) load.
Which quantities are measured?
Load AC voltage (0–200 V) and current (0–2 A) on 3½ digit meters.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Electricity and Magnetism
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