Universal Motor Speed Control Manufacturer,Supplier and Exporter in India
Product Code : EL-PET-1425
Jlab Export is a leading Universal Motor Speed Control Manufacturer,and suppliers in India
Universal Motor Speed Control (code EL-PET-1425) is a power electronics training board for controlling the speed of a universal motor with thyristors — an SCR for the half-wave controllers and a TRIAC for full-wave control. The board can control universal motors of up to 1/4 HP, and it carries its own universal motor of 1/12 HP or less. It is a JLab product, manufactured by Jain Laboratory Instruments Pvt Ltd in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Motor type | Universal motor — series wound, able to operate on both AC and DC supply |
| Speed-control capability | Universal motors up to 1/4 HP |
| Motor on the board | Universal motor of 1/12 HP or less |
| Experiments | Half-wave controller without feedback; half-wave controller with feedback; half-wave high-torque-at-low-speed version with skip-cycling operation; full-wave controller using a triac, demonstrating the hysteresis effect and its improvement by gate slaving |
| Thyristors | SCR and TRIAC for speed control of the motor |
| Trigger components | DIAC and two diodes |
| Potentiometers | Two |
| Firing-angle capacitors | Two capacitors to control the firing angle of the thyristors |
| Snubber | Snubber circuit in parallel with the triac, improving the dv/dt of the device and reducing RFI |
| 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: object, theory, design procedures, report suggestions and book references |
| Weight | 3 kg (approx.) |
| Dimensions | W 340 × H 110 × D 210 |
| Other apparatus required | Digital multimeter, 3¾ digit; dual-trace cathode ray oscilloscope, 20 MHz (unearthed) |
| 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-1425 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Universal Motor Speed Control Board Used For?
A universal motor’s speed rises and falls with the voltage applied to it, so a thyristor that switches on part-way through each half-cycle gives smooth speed control straight from the AC mains. The board takes students from simple half-wave SCR control to full-wave triac control on a real motor, with the waveforms brought out to the panel for study. Universal motors drive mixers, drills, vacuum cleaners and many other small appliances, so these are the same kinds of circuit found in everyday speed controls. The experiments fit electrical machines and power electronics practicals in diploma and engineering courses.
What to Specify When Ordering
- The number of boards for your laboratory.
- Any meters or oscilloscopes to be quoted with them.
- Other AC phase-control trainers from the range, if you are building a complete set of practicals.
- Delivery destination, delivery terms and, where relevant, the tender reference.
Frequently Asked Questions
What is skip-cycling operation?
In the high-torque, low-speed half-wave version, the controller fires on only some of the supply cycles and skips the rest, so at low speed the motor receives fewer but stronger pulses of power instead of a weak pulse every cycle. This keeps the torque up when the motor runs slowly.
What is the benefit of the feedback controller?
A controller with feedback adjusts the firing according to how the motor is actually running, so the speed holds better when the load changes than with the simple open-loop half-wave controller.
What does gate slaving improve in the triac controller?
In a simple diac–triac phase control the control has to be turned further to start conduction than to stop it — the hysteresis effect. Gate slaving reduces this, giving smoother control at low settings, and the full-wave controller on the board demonstrates the effect and the improvement.
Why is there a snubber across the triac?
The snubber, connected in parallel with the triac, improves the device’s dv/dt behaviour and helps reduce radio frequency interference (RFI). With an inductive load such as a motor, a fast voltage rise across a triac can otherwise turn it on when it should stay off.
What other apparatus is needed?
A 3¾-digit digital multimeter and a 20 MHz dual-trace cathode ray oscilloscope of the unearthed type. JLab lists a digital multimeter and a 20 MHz dual-trace oscilloscope separately; both are linked below and can be added to the same enquiry.
How does it differ from the Triac and AC Phase Control trainer?
That trainer works with a lamp load and covers the triac’s four triggering modes, transistor gate control, phase control with a DIAC, a light dimmer showing the hysteresis effect and its minimisation by gate slaving, and RFI suppression with a filter. This board applies SCR and triac control to a universal motor.
What does JLab need to quote for export?
The number of boards, the destination country and port or city, the delivery terms you prefer (for example FOB or CIF), any packing or labelling instructions, and the tender reference where there is one.
Who manufactures the Universal Motor Speed Control board?
Jain Laboratory Instruments Pvt Ltd (JLab) manufactures it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of power electronics trainers and laboratory instruments in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The motor speed control board is built in JLab’s own works rather than bought from a trader, so engineering colleges, technical institutes, dealers and importers buy direct from the maker; each board is visually inspected before it ships, and repeat orders and spares are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — for example Egypt in North Africa, Poland in Eastern Europe, the USA in North America, Togo in West Africa and Guatemala in Central America and the Caribbean. Tender buyers will find details on the JLab lab tenders page.
Related Phase-Control Trainers and Instruments
- Triac and AC Phase Control — triac triggering modes, DIAC phase control, gate slaving and RFI suppression on a lamp load.
- SCR And AC Phase Control — resistance, R-C and UJT trigger circuits for SCR half-wave and full-wave phase control.
- Lamp Dimmer Using Diac and Triac — a diac–triac board with a potentiometer to set the lamp brightness.
- Diac Characteristics Apparatus — for plotting the V–I characteristics of a diac.
- Dual Trace Oscilloscope — a 20 MHz dual-channel oscilloscope.
- Digital Multimeter — a hand-held meter for AC and DC voltage, DC current and resistance.
See all Power Electronics Trainers or the complete Electronics Lab Equipments range.
Request a Quote
Ask for a quotation with the Add To Cart enquiry button on this page, or send your details through the contact page: the number of boards, the delivery destination and any instruments you want on the same quote.
Last updated: 22 October 2026
