Equipment information
Hickok Electrical Instrument Company 244 Power supply
Manufacturer:
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Model:
244
Date:
Category:
Group:
Description:
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.
Manual Type:
Service and User Manual
Pages:
22
Size:
15.77 Mbytes (16534186 Bytes)
Language:
english
Revision:
Manual-ID:
2490-678
Date:
Quality:
Scanned document, all readable.
Upload date:
2013 01 07
MD5:
e50a774ec47e649c0434b5499b706fec
Downloads:
884
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