The HS200 & HB200 are highly efficient, lightweight AC frequency power converters. These models utilize the latest state of the art solid state circuitry to convert a 115/200 Vac, 400 Hz, 3 PH input to 115 Vac, 60 Hz or 230 Vac, 50 Hz sine wave output.Design features include a crystal-controlled oscillator for output frequency stability and a pulse-width-modulated square to sine wave power conversion scheme for efficient and reliable operation.The HS200 and HB200 static frequency changers are designed to power laptop computers, audio/video entertainment systems, portable electronics (stereo, MP3, CD, DVD, video games, etc.), microwave ovens, coffee makers and medical equipment in airborne, marine and ground mobile applications.