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Hickok Electrical Instrument Company 244 Power supply
Manufacturer:
Model:
244
Date:
unknown
Class:
Type:
SubType:
Mobil/Comm DC Power Supply

Information

DESCRIPTION The Hickok model 244 Mobil/Comm Power supply is a compact, state-of-the-art, precision instrument, designed to supply filtered, regulated, direct current, applicable to servicing automotive-type electronic equipment, specifically personal communications transceivers such as Citizen Band units. model 244 incorporates features of particular value to the communication equipment technician. The voltage output is variable from 10 to 14.5 Vdc with a calibrated meter designation for 13.8 Vdc. The current output is capable of supplying 0 to 3 amperes. Both voltage and current are metered. "Foldback" current limiting makes the model 244 absolutely burn-out proof. Even a dead short across any output terminals will cause no damage. There are no circuit breakers to reset, or fuses to replace. After the short circuit is removed, the unit will return to normal operation. During shorted or high current conditions, the "foldback" current limit circuit reduces available current to approximately 1.4 amperes and the OVERLOAD indicator lamp lights. Three 5-way output binding-post terminals are provided on the front panel, +, -, and ground. Depending on the application, the unit may be operated up to 500 volts off ground potential.

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Service and User Manual
Manual type:
Service and User Manual
Pages:
22
Size:
15.77 Mbytes (16534186 Bytes)
Language:
english
Revision:
Manual-ID:
2490-678
Date:
unknown
Quality:
Scanned document, all readable.
Upload date:
07 January 2013
MD5:
e50a774ec47e649c0434b5499b706fec
Downloads:
915

Information

TABLE OF CONTENTS SECTION Page I GENERAL INFORMATION ... 1 Description ... 1 Specifications ... 2 Controls and Indicators Description ... 3 II OPERATION ... 5 General ... 5 Preliminary Operation ... 5 Operation ... 5 Using model 244 to Power Automotive . . 6 Radio Equipment Using model 244 with Output Referenced . . 6 to Ground III APPLICATIONS ... 7 Testing Citizen Band Transceivers ... 7 IV THEORY OF OPERATION ... 8 General ... 8 Regulator ... 8 Overload Condition ... 8 Overload Protection ... 8 Metering ... 9 V MAINTENANCE ... 10 General ... 10 VI CALIBRATION ... 11 General ... 11 Equipment Required ... 11 Preliminary ... 12 Panel Meter Voltage Calibration ... 12 Panel Meter Current Calibration ... 13 VII PARTS LIST ... 14

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