The PS-7 is a 13.6 volt, DC regulated power supply capable of delivering up to 25 amps of continuous current. Excellent voltage regulation is provided by a silicon monolithic integrated circuit and associated circuitry. Output voltage and current are adjustable with internal controls which have been factory set to provide 13.6 volts at up to 25 amps. Other features include short circuit and overvoltage protection and programmable primary voltages. An auxiliary 13.6 VDC output is provided on the rear panel and is fused internally at I amp. Primary voltages of 100, 120, 200, and 240 VAC, 50-60 Hz may be used with the PS-7 and may be quickly changed via the programming switches. For demanding duty cycles, such as extended RTTY or SSTV transmission, the model 1529 FA-7 Cooling Fan is recommended for additional cooling, especially at ambient, temperatures above 25°C.