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Switched Power Supply
Switched Power Supply (Product Code: SLE/EAM/02) is a rugged bench power unit giving 0 to 12V in 2V steps, as either capacitor-smoothed d.c. or a.c., with an output of up to 5A. It is a traditional switched design meant for laboratory work that needs a dependable source of emf, and it serves schools and colleges looking for a general-purpose lab power supply unit in India. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Output voltage (d.c.) | 0 to 12V in 2V increments, capacitor smoothed |
| Output voltage (a.c.) | 0 to 12V in 2V increments |
| Output current | 5A max, 4A continuous |
| Input | Switched, 230/240V a.c. 50Hz |
| Current protection | Thermal circuit breaker (front-panel thermal trip), manual reset |
| Voltage limiter | Front-panel Allen key insert; the unit can be locked at any setting |
| Switch protection | Internal mechanism disconnects the output while the voltage setting is changed, protecting the switch contacts from overload |
| Case | Robust powder-coated case with integral carrying handle |
| Storage | Sized so that 4 units can be carried in a single storage tray |
Typical Use
Stepped outputs suit practicals where students need repeatable voltages rather than fine adjustment: 2V steps for plotting current against voltage in Ohm’s law work, a low d.c. setting for small motors and electromagnets, or low-voltage a.c. for transformer and induction experiments. Because the output is disconnected while the selector is being moved, changing steps under load does not overload the switch contacts — a real advantage when many hands use the same unit.
Before the class starts, the teacher can use an Allen key through the front panel to lock the unit at the setting the experiment needs. If a circuit draws too much current, the thermal circuit breaker trips; clear the fault and reset it manually from the front panel. Keep continuous loads within 4A, carry units by the integral handle, and store them four to a tray to save bench and cupboard space.
Supplier
This power supply is supplied by Jain Scientific Equipments Private Limited, which trades as ScienceLab from Ambala, Haryana, and provides laboratory equipment to schools, colleges and distributors in India and international markets alongside its own manufactured range. See our company profile for more.
Related Electricity and Magnetism Equipment
Instruments and apparatus used with a bench supply:
- Precision Variable Power Supply — a regulated, continuously variable d.c. alternative
- Precision Switched Power Supply — another switched-output option in the same category
- Digital Voltmeter — checks the output voltage in circuit
- Digital Ammeter — monitors the load current
- Primary and Secondary Coil Set — a transformer experiment that uses the a.c. output
See more in the Electricity and Magnetism category.
Frequently Asked Questions
Which outputs does it provide?
0 to 12V d.c. (capacitor smoothed) and 0 to 12V a.c., both in 2V increments.
How much current can it deliver?
5A maximum and 4A continuous.
What mains input does it need?
230/240V a.c. 50Hz.
What happens if a circuit is overloaded?
The front-panel thermal circuit breaker trips. It is reset manually once the fault is cleared.
Can I stop students from turning the voltage up?
Yes. The voltage limiter uses a front-panel Allen key insert, and the unit can be locked at any setting.
Is the d.c. output regulated?
It is described as capacitor smoothed rather than regulated. For a fully smoothed and regulated output, see the Precision Variable Power Supply.
What warranty and calibration documents are available?
Warranty terms are confirmed with the quotation, and calibration certificate requirements can be discussed with us — contact us.
Can you quote for a full lab set of supplies?
Yes. Send the quantity and delivery location in India or abroad, and we will quote for the units and any meters or leads you need.
Request a Quote
To price the Switched Power Supply, please contact us or add it to the enquiry cart.
Last updated: 24 September 2026
