SCR Triggering Circuit Manufacturer,Supplier and Exporter in India
Product Code : EL-PET-1424
Jlab Export is a leading SCR Triggering Circuit Manufacturer,and suppliers in India
SCR Triggering Circuit (code EL-PET-1424) is a power electronics training board for firing an SCR with controlled gate pulses from a TCA785 signal conditioner and pulse generator IC, and for seeing how the firing angle moves when the reference voltage is changed. It gives students a clear picture of how the signal conditioner and pulse generator work. JLab (Jain Laboratory Instruments Pvt Ltd) produces the board at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Experiments | SCR triggering with controlled gate pulses; change of firing angle in response to a change in reference voltage; functioning of the signal conditioner and pulse generator |
| Signal conditioner and pulse generator | IC TCA785 |
| DC supplies | +15 V and +10 V DC at 50 mA, IC regulated, internally connected; +5 V DC at 50 mA, IC regulated, isolated |
| AC supply | 24 V AC at 300 mA |
| Synchronising signal | Built in |
| Opto-coupler | Built in |
| SCR | 100 V, 1 A |
| Transistor | BC107 |
| Other components | Adequate number of other electronic components |
| Mains controls | Mains ON/OFF switch, fuse and jewel light |
| Mains supply | 230 V ±10%, 50 Hz AC |
| Patch cords | Adequate number, stackable, 4 mm spring-loaded plugs, ½ metre long |
| Terminals | Terminals and sockets on the panel for connections and observation of waveforms |
| Operating instructions | Detailed, covering object, theory, design procedures, report suggestions and book references |
| Weight | 4 kg (approx.) |
| Dimensions | W 412 × H 150 × D 310 |
| Other apparatus required | Dual-trace cathode ray oscilloscope, 20 MHz (unearthed); bulb, 24 V / 7 W |
| Packing | Corrugated box |
| Quality check | Each board is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-PET-1424 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the SCR Triggering Circuit Board Used For?
The firing angle is the delay, in degrees of the AC cycle, between the start of a half-cycle and the gate pulse that turns the SCR on; the later the pulse, the smaller the part of each half-cycle that reaches the load and the lower the average power. Controlled rectifiers, AC regulators and motor drives all depend on placing that pulse accurately and keeping it locked to the mains, which is the task of a synchronised pulse generator. On this board students study that control side directly, viewing the gate pulses and other waveforms on an oscilloscope. It belongs in the power electronics laboratory of electrical and electronics engineering programmes.
What to Specify When Ordering
- The number of boards.
- Any test equipment you would like quoted with them.
- Follow-on converter trainers, such as the single-phase half-controlled or fully controlled bridge boards, if the course continues to complete converters.
- Destination, delivery terms and, for a tender, its reference.
Frequently Asked Questions
What does the TCA785 IC do on this board?
The TCA785 is a phase-control IC. It synchronises to the AC supply, generates a ramp in each half-cycle and compares it with a control voltage, releasing a gate pulse when the ramp crosses that voltage. Changing the reference voltage therefore moves the pulse, and with it the firing angle of the SCR.
Which power supplies are built in?
+15 V and +10 V DC at 50 mA, IC regulated and internally connected; an isolated +5 V DC, 50 mA IC-regulated supply; and a 24 V, 300 mA AC supply. The board runs from 230 V ±10%, 50 Hz mains.
What other apparatus is required?
A 20 MHz dual-trace cathode ray oscilloscope of the unearthed type and a 24 V, 7 W bulb. JLab’s 20 MHz dual-trace oscilloscope is linked below as a separate item that can be quoted on the same enquiry.
How does it differ from the Triggering Circuits for SCR board?
That board studies resistor, R-C and UJT triggering circuits and half-wave and full-wave controlled rectifiers, with a UJT and a pulse transformer among its parts. This board uses a TCA785 signal conditioner and pulse generator IC to produce controlled gate pulses and to shift the firing angle with a reference voltage.
What should an export enquiry contain?
The quantity, the destination country and port or city, the delivery terms you want (for example FOB or CIF), any packing or labelling instructions, and the tender reference if the purchase is through a tender.
Who manufactures the SCR Triggering Circuit board?
It is manufactured by Jain Laboratory Instruments Pvt Ltd, trading as JLab, at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an Indian manufacturer of power electronics and electronics training equipment, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The SCR triggering board is produced in JLab’s own works and not bought from a trader, so universities, polytechnics, dealers and importers deal directly with the maker; each board is visually checked before dispatch, and any repeat order is supplied by the same works. The company is registered for GST under GSTIN 06AADCJ9848D1ZE and holds Legal Entity Identifier 549300DTGS77DGYD6N03. JLab exports worldwide and ships to buyers in every region — for example the Czech Republic in Eastern Europe, Mexico in North America, Zimbabwe in East Africa, Congo in Central Africa and Sierra Leone in West Africa. For tender purchases, see the JLab lab tenders page.
Related SCR Trainers and Instruments
- Triggering Circuits for SCR — for R, R-C and UJT triggering circuits and half-wave and full-wave controlled rectifiers.
- SCR And AC Phase Control — resistance, R-C and UJT trigger circuits for half-wave and full-wave phase control.
- Single Phase Half Controlled Symmetrical — a board for symmetrical and asymmetrical half-controlled bridge converters.
- Single Phase Fully Controlled Bridge Converter — a four-SCR bridge converter board with UJT firing.
- SCR Characteristics Apparatus — for plotting the anode current against anode–cathode voltage of an SCR.
- Dual Trace Oscilloscope — a 20 MHz dual-channel oscilloscope.
Find more in the Power Electronics Trainers category or across the Electronics Lab Equipments range.
Request a Quote
For a quotation, click the Add To Cart enquiry button on this page or reach JLab through the contact page, listing the number of boards, the delivery destination and any oscilloscope or converter boards to add.
Last updated: 22 October 2026
