Power Supplies

Buy power supplies in Pakistan at stem.pk. We stock SMPS switching power supplies, bench lab power supplies, DC-DC converters, voltage regulators, and industrial 5V/12V/24V DIN rail supplies for electronics workshops, automation panels, and engineering labs.

Why Choose Our Power Supplies?

• 220V input — all supplies rated for Pakistan's mains voltage
• Short circuit protected — built-in overcurrent and overvoltage protection
• Workshop to industrial grade — from student bench supplies to DIN rail industrial units

Power Supply Types

• SMPS (Switching) — compact, efficient 5V/12V/24V fixed-output supplies
• Bench Lab Supplies — adjustable voltage and current with digital display
• DIN Rail Supplies — 24V industrial supplies for PLC and automation panels
• DC-DC Buck / Boost — adjustable step-down (LM2596) and step-up converters
• Voltage Regulators — LM7805, LM7812, LM317 for PCB-level regulation

Related Categories

Browse our Power Supply Adapters for wall-plug adapters and chargers. Also see Batteries for portable power solutions.

Common Applications

• Electronics workshop — bench supply for testing Arduino, ESP32, and sensor circuits
• LED lighting — 12V SMPS for LED strip installations, see LEDs
• Industrial automation — 24V DIN rail supplies for relay and PLC systems
• PCB prototyping — regulated bench supply for safe circuit testing

How to Choose a Power Supply

1. Output voltage — match to your load: 5V for Arduino, 12V for motors and LEDs, 24V for industrial
2. Current rating — add up all load currents and add 20% headroom
3. Regulation type — switching (SMPS) for efficiency; linear (LM317) for low-noise analog circuits

Learning Resources

• Electronics Hub — SMPS Guide — how switching power supplies work
• Last Minute Engineers — LM2596 Buck Converter — adjustable DC-DC step-down tutorial

Need adapters? Check Power Supply Adapters. For bulk orders contact info@stem.pk.