This device is a bipolar power supply designed to provide symmetrical ±12 V DC voltage for electronic circuits requiring dual supply rails. The power supply consists of a rectifier, filter, and a parametric voltage stabilizer.
The circuit is intended for devices with current consumption up to 100 mA. It is suitable for powering audio and analog circuits, including:
- kit model HK1028 - stereo mixer;
- kit model HK1037 - stereo preamplifier with tone control;
- other circuits using operational amplifiers and bipolar supply voltage.
The output current can be adjusted by changing the values of the corresponding resistors in the circuit.
The printed circuit board dimensions are 47 x 30 mm.

Technical Specifications:
Type: bipolar power supply.
Output voltage: ±12 V DC.
Maximum output current: up to 100 mA.
Stabilization: parametric stabilizer.
Structure: rectifier, filter, stabilizer.
Application: audio and analog circuits.
PCB dimensions: 47 x 30 mm.

This product is a DIY assembly kit.