The 10A12-P4-I5 is a miniature, PCB-mount DC-DC converter from the Ultravolt A Series, designed to provide a stable, high-voltage biasing supply. It accepts a nominal 12VDC input (from +11V to +16V) and delivers a precisely controlled positive output voltage from 0 to 1000VDC with up to 4W of power and 4mA of current. Key features include an output current monitor, indefinite short-circuit protection, low output ripple of 0.038% V p-p, and the -I5 option for 5V control and monitoring. This regulated power supply is ideal for applications requiring a reliable high-voltage source, such as in mass spectrometers, photomultiplier tubes (PMTs), and electrostatic detectors.