Switching Mode Power Supply Open Frame has a power supply range of 12V to 250 ampere. The Open Frame is useful where input variation is very high. The Open Frame is equipped with a feedback circuitry that regulates the energy transfer to maintain a constant voltage within the load limits of the circuit. Switching Mode Power Supply Open Frame uses power fetch with fast turn-on and turn-off characteristics that operate comfortably at frequency above 100 kHz practical.