Build Your 0V-30V DC Adjustable Power Supply Circuit

Description

This circuit represents a basic, stabilized DC power supply, utilizing the widely recognized LM723 integrated circuit to control a transistor, Q1 [2N3055]. Voltage and current control are achieved through a potentiometer, R1, spanning a range of approximately 0V to 30V DC. To achieve the desired 30V output, the transformer, TR1, provides the necessary power to the load. The resulting output voltage typically falls within the 26V range. Proper heat dissipation is critical for Q1, necessitating a suitable heatsink. Furthermore, the employment of a high-quality potentiometer for R1 is essential for optimal performance.

LM723 Integrated Circuit

The LM723 is a versatile operational amplifier commonly employed in a broad spectrum of electronic circuits. As a three-terminal device – typically featuring an inverting input, a non-inverting input, and an output – it’s frequently utilized for amplification, filtering, and signal conditioning applications. Its robustness and relatively low cost contribute to its popularity within hobbyist and professional electronic design.

Circuit diagram

Part List