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MODEL 1502 |
General Descripition
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 over voltage protection and programmable primary voltages.
An auxiliary 13.6 VDC output is provided on the rear panel and is fused internally at 1 amp. Primary voltages of 100, 120, 200, and 240 VAC, 5O-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.
Current Overload Protection
When the PS-7 is subjected to a current overload or short circuit condition, the regulator circuit Will automatically shut down. The unit may be reset by momentarily switching the ON-OFF switch
on the TR-7 to OFF or by removing the AC primary voltage to the PS-7. The power transformer is protected by an 8 ampere type MDL fuse on primary voltages of 100 or 120 VAC or a 4 ampere
type MDL fuse on 200 or 240 VAC. Refer to Figure 1 for location on the rear panel. This fuse should be replaced with another fuse of the same type and rating. The auxiliary DC output is internally
fused with a 1 amp type MDL fuse. This is located inside the unit, on the regulator P.C. board. This fuse should be replaced only with another fuse of the same type and rating.Accessory
Model 1529 FA-7 Cooling Fan
