Three Phase Half Controlled Thyristorized Bridge Converter with Triggering Circuit with Power Supply Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12918
Indian Lab Suppliers supplies the Three Phase Half Controlled Thyristorized Bridge Converter with Triggering Circuit with Power Supply (Product ID: 12918) as part of its electronics engineering lab equipment range. It is a line-commutated three-phase half-controlled thyristor bridge converter with its own ramp-comparator triggering circuit.
Quick Answer
The bridge uses three thyristors in the positive group, fired by three identical cards, one per phase, each with a zero-crossing detector, integrator, comparator and pulse generator; a single potentiometer sets the firing angle. Three 415:6 V transformers synchronise the triggering, three 415:50 V, 1 A transformers feed the bridge, and three driver circuits with pulse transformers deliver high-frequency gated gate pulses. Experiments cover the generation of the control signals, operation with R and R-L loads, and the effect of the freewheeling diode. Two 3½-digit panel meters read voltage and current, and supply is through a four-pole MCB and three-pole contactor. The unit works on 415 V three-phase mains: it must be earthed, wired by a qualified person and used under supervision, and waveforms should be viewed with isolated or differential oscilloscope probes rather than a floating oscilloscope.
Key Specifications
| Parameter | Detail |
|---|---|
| Converter | Three-phase half-controlled bridge, line commutated |
| Triggering | 3 cards: zero-crossing detector, integrator, comparator, pulse generator; firing-angle potentiometer |
| Drivers | 3 driver circuits with pulse transformers; high-frequency gated firing |
| Transformers | 3 × 415:6 V (trigger); 3 × 415:50 V, 1 A (power) |
| Control supplies | ±12 V and 5 V DC, 500 mA, IC regulated |
| Load | R and L with load voltage divider; freewheeling diode |
| Meters | 2 × 3½-digit DPM for voltage and current |
| Protection | 4-pole MCB; 3-pole contactor with push-to-ON; red, yellow and blue indicator lamps |
| Mains | 415 V three phase, 50 Hz |
Where This Is Used
Used with the Three Phase Fully Controlled Thyristorized Bridge Converter with Triggering Circuit with Power Supply (Product ID: 12919) and the Three Phase Half Wave Rectifier with Power Supply (Product ID: 12917) in three-phase converter practicals. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
How many thyristors are fired?
Three, in the positive group; the other half of the bridge uses diodes.
What does high-frequency gated firing do?
It sends a burst of pulses instead of one, so the thyristor turns on reliably with inductive loads.
What loads are provided?
R and L loads with a load voltage divider, plus a freewheeling diode.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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