We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular circuit board with terminal blocks, potentiometers and an on/off switch

Electronix Express

Electronix Express DIY Dual Rail Variable DC Power Supply Soldering Kit (Intermediate Level)

SKU CH-4PYV-R5QCF

Build a dual-rail variable DC supply with ±1.5 V to ±16 V rails and 3 V to 32 V single-rail range

  • Adjustable single-rail voltage from 3V to 32V
  • Dual-rail output spans ±1.5V to ±16V for bipolar circuits
  • Two independent high-gain op-amps provide stable regulation
  • On-board terminal blocks and power switch simplify wiring
  • Compact 1.75 inch wide PCB fits tight project enclosures

Dual-Rail Variable DC Power Supply Kit

This intermediate-level soldering kit builds a dual-rail variable DC power supply suitable for powering a wide range of electronic circuits. It provides a single supply range of 3V to 32V or dual supplies from +/- 1.5V to +/- 16V. Two independent, high-gain internally frequency compensated op amps deliver positive and negative adjustable outputs. All component parts are included, though a soldering iron and solder are required separately.

Build Integration and Bench Utility

The assembled board measures 1.75 by 3 inches and features input and output terminal blocks plus an on/off switch for straightforward bench integration. It accepts an input DC voltage of +3V to +15V, converting this into the wider adjustable output ranges. Two adjustable potentiometers allow precise voltage setting for each rail. The kit frees up bench space by combining positive and negative variable supplies in one compact module.

Who This Suits and Who Should Look Elsewhere

This kit suits hobbyists and students with intermediate soldering experience who need a versatile, adjustable bench power supply for prototyping. Builders requiring higher current capacity, fixed-voltage outputs, or a ready-to-use unit without assembly should consider alternative solutions. Users without access to soldering equipment or those needing regulated outputs beyond the stated voltage ranges will not find this kit suitable.

Highlights

  • Adjustable single-rail voltage from 3V to 32V
  • Dual-rail output spans ±1.5V to ±16V for bipolar circuits
  • Two independent high-gain op-amps provide stable regulation
  • On-board terminal blocks and power switch simplify wiring
  • Compact 1.75 inch wide PCB fits tight project enclosures

Specifications

BrandElectronix Express

Questions about this item

What is the maximum single-rail voltage the kit can deliver before it hits its limit?

The single-rail output tops out at 32 V, so that is the highest voltage you can set before the supply reaches its limit.

How much heat or noise does the assembled board produce when it runs continuously?

The board uses only linear op-amps and passive parts, so it generates modest heat and no fan noise during all-day operation.

Which tools and consumables must I already have to finish the build?

You need a soldering iron and solder; the kit includes every component but does not supply those two items.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.