Bench testing power supplies and accessories convert, regulate, protect, and monitor current and voltage. Bench single output DC power supplies convert AC to DC power to regulate the current, preventing damage to vital equipment. Bench triple output DC power supplies convert AC current to DC, providing a stable and clean power source. They monitor output voltage and current while offering three outputs. Bench quadruple output DC power supplies also convert AC current to DC to provide a stable and clean power source, with the capability of monitoring up to four outputs of voltage and current. Bench AC power supplies test electrical equipment while protecting against circuit breaker overload and power surges. Bench testing power supply accessories connect or adapt test instruments, allowing them to monitor or test a device.