Zero Voltage Switching Manufacturer,Supplier and Exporter in India
Product Code : EL-PET-1444
Jlab Export is a leading Zero Voltage Switching Manufacturer,and suppliers in India
Zero Voltage Switching (code EL-PET-1444) is a power electronics training board for studying zero voltage switching of a thyristor, where the device is turned on only at or near the zero crossings of the AC supply. The circuit uses a thyristor, an NPN transistor and a transformer that gives low AC voltage to the thyristor and DC voltage to the transistor. Jain Laboratory Instruments Pvt Ltd (JLab) makes the board in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Object | To study the operation of zero voltage switching of a thyristor |
| Transformer | Gives low AC voltage to the thyristor and DC voltage to the transistor |
| Rectifier | Two diodes used as a full-wave rectifier |
| Collector protection diode | One diode to prevent negative voltage at the collector of the NPN transistor |
| Transistor | One NPN transistor |
| Thyristor | One |
| 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 |
| Terminals | Terminals and sockets at appropriate places on the panel for connections and observation of waveforms |
| Operating instructions | Detailed, covering the 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; dual trace cathode ray oscilloscope, 20 MHz (unearthed, or with an isolation transformer for unearthing) |
| 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-1444 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Zero Voltage Switching Board Used For?
When a thyristor is fired partway through a half cycle, the load current jumps from zero to a high value almost instantly, and that steep step produces radio-frequency interference and stresses the load. Zero voltage switching avoids the step by letting the thyristor fire only when the supply voltage is at or close to zero, so the load receives complete half cycles and power is set by how many cycles are passed rather than by a firing angle. Science and engineering students use the board to study this mode of operation, measuring with a digital multimeter and comparing the supply and thyristor waveforms on an oscilloscope.
What to Specify When Ordering
- Quantity — how many boards the lab needs.
- Instruments — whether a digital multimeter or an oscilloscope should be quoted with the boards.
- Companion boards — phase-control or triac switching trainers for the same course.
Frequently Asked Questions
What are the advantages of zero voltage switching?
Switching at the voltage zero greatly reduces radio-frequency interference and the inrush current into the load. That is why zero-crossing control is widely used for resistive loads such as heaters and furnaces, and in zero-crossing solid-state relays.
How does zero voltage switching differ from phase control?
Phase control fires the thyristor partway through every half cycle and varies that point, as in a lamp dimmer. Zero voltage switching always fires at the start of a half cycle and controls power by switching whole cycles on and off, so it suits loads that respond slowly, such as heating elements.
Why is there a diode at the transistor collector?
An NPN transistor needs its collector to stay positive with respect to its emitter. The diode keeps the negative part of the AC voltage away from the collector, so the transistor is not reverse-biased in that half cycle.
What other apparatus is required?
A digital multimeter and a 20 MHz dual trace cathode ray oscilloscope, used unearthed or through an isolation transformer for unearthing. JLab’s Dual Trace Oscilloscope is a separate item and can go on the same enquiry.
What should an export quotation request include?
The number of boards, the destination country and port or city, the delivery terms required (for example FOB or CIF), packing or labelling instructions and a tender reference if the order is for a tender.
Who manufactures the Zero Voltage Switching board?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of electronic lab instruments and power electronics trainers in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. It is registered as a manufacturing enterprise under MSME Udyam registration UDYAM-HR-01-0003849 and holds Importer-Exporter Code 3317504552. This board is made at JLab’s own works rather than bought in from a trader, so colleges, institutes, dealers and importers deal with the manufacturer itself, each board is visually inspected before dispatch and repeat orders come from the same works. JLab exports worldwide and ships to buyers in every region — for example Botswana in Southern Africa, Sudan in North Africa, Peru in South America, Switzerland in Western Europe and Portugal in Southern Europe. Information for tender purchases is on the JLab lab tenders page.
Related Thyristor Switching Trainers
- Triac AC Line Switching — a board for experiments on the triac as an AC mains power switch, including line-triggered and DC-triggered switching.
- Lamp Dimmer Using Diac and Triac — a self-contained phase-control board for comparison with zero voltage switching.
- SCR Triggering Circuit — a board for SCR triggering with controlled gate pulses and firing-angle change with reference voltage.
- Dual Trace Oscilloscope — a 20 MHz dual-channel cathode ray oscilloscope, sold separately.
Explore the Power Electronics Trainers category and the wider Electronics Lab Equipments range.
Request a Quote
Use the Add To Cart button on this page or the contact page to enquire, with the number of boards, the delivery destination and any instruments or companion trainers you want included.
Last updated: 22 October 2026
