# AC-DC power supply module kit, continuously adjustable, 0-30V, 2mA-3A, unassembled

> Unassembled kit for an adjustable AC-DC power supply module with output voltage 0-30VDC and output current 2mA-3A, both continuously adjustable. Through-hole components, PCB marked for easy assembly. Includes overcurrent and short-circuit protection with LED indicator. Requires a 24V AC transformer for power. Suitable for lab use, DIY projects and soldering practice.

- Page: https://sigmanortec.ro/en/ac-dc-power-supply-module-kit-continuously-adjustable-0-30v-2ma-3a-unassembled
- Price: 34.30 RON
- Availability: Out of stock
- Reference: 9755 · EAN: 5945078052986
- Category: Mechatronics and IoT > The Kit > DIY Electronics Kits
- Specifications: Minimum Output Voltage: 0; Maximum Output Voltage: 30; Source Type: descend; Current Adjustment: Yes; Voltage Adjustment: Yes; Adjustment Type: Variable; Maximum Output Current: 3; Input Voltage Type: AC; Output Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.079 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:50 (Europe/Bucharest)

## Description

Unassembled kit for adjustable AC-DC power supply, ideal for lab and DIY projects, offers 0-30VDC voltage and 2mA-3A current limitation for controlled power supply of loads. Through-hole components are easy to solder, PCB has clear markings for mounting, includes overcurrent and short circuit protection with LED indicator. Requires 24VAC transformer.
Unassembled kit for an adjustable AC to DC power supply that offers the ability to adjust the output voltage from 0V to 30V and the output current from 2mA to 3A. The components are of the TH (Through Hole) type, which means that it is easy to assemble, without the need for SMD soldering equipment.
ATTENTION: The module uses AC voltage for power. You need a 24VAC transformer to use the kit. Considering the fact that it uses mains voltage, this kit is NOT INTENDED FOR CHILDREN ! It can be used as soldering practice.
Many components of the kit ARE SIMILAR in appearance and size BUT THEY ARE DIFFERENT in values! Always check the inscriptions on the components before mounting them. All the components and their orientation are marked on the PCB. The kit does not come with instructions other than those written on the PCB. This product benefits from a component warranty strictly until the moment of component assembly.
It has over-current and implicitly short-circuit protection functions, ensuring the safety of connected devices, preventing any risk of burning or damage.
Specifications:
Form: Unassembled
Input Voltage: 24V AC
Input Current: Maximum 3A
Output Voltage: 0 - 30VDC, continuously adjustable
Output Current: 2mA - 3A, continuously adjustable
Output Voltage Ripple: Minimum 0.01%
Circuit Elements: All components are thru-hole type, easy to assemble
LED indicator: For over-current protection, with LED lighting when the set current is exceeded
Protections: Overload and short circuit
Assembled kit dimensions: 84 x 84mm
Use:
Follow the markings on the PCB to correctly assemble the kit. It is recommended to have basic knowledge in electronics and to use a quality letcon.
Power the kit with 24V AC , using a suitable transformer, respecting the maximum current limit of 3A.
Adjust the potentiometers to set the desired output voltage from 0V to 30V and the current from 2mA to 3A, depending on your preferences.
The LED indicator will light up to signal the overcurrent protection, activating in case of an overload or a short circuit, thus protecting the connected devices.
Used with a 2-wire transformer, Phase and Neutral are connected to the first and last pin respectively of the input connector. On the AC input in this case, the middle pin (0V) remains free.