The Metrix AX0503A is a triple laboratory power supply of the AX500 series, designed for precise and reliable power supply in laboratory and development environments. The device features three independent outputs, with two variable channels each providing a voltage of 0 to 30 V DC and a current of 0 to 2.5 A. The third output offers fixed voltage steps of 2.7 V, 3.3 V, and 5.5 V with a maximum current of 5 A, making it particularly suitable for powering logic circuits such as TTL or CMOS technology. The linear technology ensures a stable, largely noise-free voltage supply, which is required for sensitive electronic components.

Applications
This power supply is designed for applications in electronics development, testing, and maintenance. It is suitable for powering prototypes, measuring instruments, microcontroller boards, and other devices requiring precise and interference-free power supply. The ability to connect the two 30-V outputs in series or parallel expands its applications: in series, up to 60 V/2.5 A can be achieved, and in parallel operation, up to 30 V/5 A. This flexibility also makes the device suitable for applications with higher voltage or current requirements.

Functions and Equipment in Detail
The two variable outputs (1 and 2) are adjusted via rotary controls, with voltage and current displays color-coded for quick differentiation. The third output provides fixed voltage steps optimized for digital circuits. An integrated tracking mode enables synchronized control of the two 30-V outputs in master/slave configuration, ensuring precise and consistent power supply in multi-channel applications.

Technology Explained Simply
The linear technology operates without a switching regulator, resulting in low ripple voltage and high stability. The toroidal transformer ensures high efficiency and enables quiet operation without forced ventilation. The outputs are double-insulated against the mains power supply, providing high safety. Additionally, the device features a short-circuit current limiter and temperature monitoring, which intervene in case of overload or overheating to prevent damage. The safety sockets are protection-insulated and include a protected earthing connection.

Compatibility and Accessories
Compatible measurement leads, female/female, green/yellow (5 pieces) are available for use with the AX503, suitable for safe connection of the outputs. These leads support secure and correct connection to electronic assemblies.

Mounting and Installation
The device is designed as a benchtop unit and requires no special mounting. It is directly connected to the mains power supply and operated via the control panel. Connections are made via sockets, enabling secure connections.

Advantages in Operation
Combining stable voltage supply, high safety standard, and flexible configuration, the AX503 provides a reliable foundation for precise measurement and development work. Simple operation via rotary controls and clear display facilitate daily use. The quiet operation without a fan is particularly advantageous in sensitive environments.