SCR And AC Phase Control Manufacturer,Supplier and Exporter in India

Product Code : EL-PET-1415
Jlab Export is a leading SCR And AC Phase Control Manufacturer,and suppliers in India

SCR And AC Phase Control (code EL-PET-1415) is a power electronics training board for ten experiments on firing SCRs and controlling AC power by phase control, from a simple resistance trigger to UJT circuits with ramp-and-pedestal control. Three SCRs on the board serve the half-wave and full-wave inverse-parallel connections. The board is manufactured by JLab in Ambala, India.

Specifications

What Is the SCR And AC Phase Control Board Used For?

Phase control varies the power delivered to an AC load by delaying the instant in each half-cycle at which the SCR is fired: the later the firing angle, the smaller the share of each cycle that reaches the load. A plain resistance trigger gives only a limited range of control, an RC network extends it across the half-cycle, and UJT trigger circuits produce sharp, well-timed pulses whose timing can be set by a ramp, a pedestal or a combination of both. The board covers these methods for power electronics practicals in diploma and degree programmes in electrical and electronics engineering. Experiments that can be performed:

• Resistance trigger circuit for an SCR operated as a half-wave static switch and for limited-range half-wave phase control
• RC trigger circuit for an SCR operated as full-range half-wave phase control
• RC trigger circuit for an SCR connected in a bridge, full-range full-wave phase control
• Half-wave phase control with an SCR using a UJT trigger circuit with resistance-controlled ramp
• Full-wave phase control with inverse-parallel SCRs using a UJT trigger circuit with resistance-controlled ramp
• Full-wave phase control with a half-controlled bridge converter using a UJT trigger circuit with resistance-controlled ramp
• UJT trigger circuit with series transistor-controlled ramp
• UJT trigger circuit using shunt transistor-controlled pedestal
• UJT trigger circuit, resistance-controlled pedestal with improved ramp
• UJT trigger circuit, resistance-controlled pedestal with cosine-modified ramp

What to Specify When Ordering

• Other apparatus — the digital multimeter and the regulated power supply are separate items; include them on the enquiry if needed.
• Companion boards — the UJT Relaxation Oscillator or triac boards if the course covers them too.
• Quantity — the number of boards for your power electronics lab.

Frequently Asked Questions

How many SCRs are on the board and how can they be connected?
Three SCRs, which can be wired for half-wave control and for full-wave inverse-parallel connections; the experiments also use a bridge arrangement and a half-controlled bridge converter.

What is ramp-and-pedestal control?
The pedestal is a fixed voltage step and the ramp a slowly rising voltage added on top of it; the UJT fires when the total reaches its peak-point voltage. Changing the pedestal height or the ramp slope shifts the firing angle; the board has two potentiometers for setting pedestals and two for ramps.

What other apparatus is needed?
A 3¾-digit digital multimeter and a 0–30 V, 1 A IC-regulated power supply, both separate items that can be quoted with the board.

What does the isolation transformer do?
It isolates the circuit from the mains, protecting external instruments from damage if they are not isolated themselves.

What information is needed for an export quotation?
Tell us 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 requirements and the tender reference where one exists.

Who manufactures the SCR And AC Phase Control board?
Jain Laboratory Instruments Pvt Ltd, trading as JLab, builds it in Ambala, Haryana, India.

OEM Manufacturer

JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of power electronics and electrical engineering lab trainers in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. JLab assembles this board in its own works instead of buying it from a trader, so colleges, dealers and importers get it straight from the maker, every board is visually inspected before dispatch, and repeat orders stay with the manufacturer. JLab exports worldwide and ships to buyers in every region — for example Kazakhstan in Central Asia, North Macedonia in Southern Europe, Ethiopia in East Africa, Guinea in West Africa and Guatemala in Central America and the Caribbean. The JLab lab tenders page has details for tender buyers.

Related Power Electronics Trainers

• UJT Relaxation Oscillator — a 2N2646 UJT board for relaxation oscillator and SCR trigger circuit studies.
• AC Regulators Using Triac Anti Parallel Thyristor — compares triac, anti-parallel thyristor and triac-diac AC regulators.
• Triac AC Line Switching — five experiments on the triac as an AC mains power switch.
• Silicon Controlled Rectifier — for SCR gate firing, anode current, holding current and phase firing characteristics.

See all Power Electronics Trainers or the full Electronics Lab Equipments range.

Request a Quote

Send your enquiry with the Add To Cart button on this page or through the contact page, stating the number of boards, the delivery destination and any other apparatus or trainers to include.

Last updated: 22 October 2026