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T-65 FEATURES AND SPECIFICATIONS
TESTS: Low power, medium power, and power type transistors, NPN and PNP types.
TESTS: Crystal diodes for forward
(Di)
and reverse (Dr) current in comparison with manufacturer'S specifications.
ALL TRANSISTOR TESTS READ ON ONE 0-100 METER SCALE: Direct test limits for each transistor listed on
the accompanying data sheets.
TWO PANEL-MOUNTED TRANSISTOR SOCKETS: Supplemented by a universal alligator-terminated cable to
provide connection facilities for all transistors.
METER: Large,. easy to read clear-plastic cased meter. Accurately balanced and factory calibrated to within
± 2%. Rugged double-jeweled D' Arsonval type, produced by the PACE Division of Precision Apparatus Co., Inc.
MICRO-LINE ADJUSTMENT: Read directly on meter. Continuously variable heavy-duty line voltage control.
TEST CIRCUITS COMPLETELY TRANSFORMER-ISOLATED FROM POWER LINE: Assures utmost safety to
operator and instrument.
Transistor Tests, Ranges
MODEL T-65 SEQUENTIALLY TESTS TRANSISTORS AS FOLLOWS:
(1) SHORTS:
Collector-to-Emitter and/or Base shorts indicated for each transistor on the data sheets by a
limit meter reading. Automatic maximum range prevents damage to meter.
(2) lebo:
Collector cut-off current, from 2 microamperes on the first meter range to 50 milliamperes full
scale reading in 5 separate ranges:
0-100
Microamperes, Full Scale
0-500
Microamperes, Full Scale
0-2500
Microamperes, Full Scale
0-10
Milliamperes, Full Scale
0-50
Milliamperes, Full Scale
Proper collector voltage has been predetermined for each transistor and is automatically panel
selected to one of 17 available potentials between the range of .5V DC to 100V DC.
(3) L·
Leakage test (Collector-to-Emitter current, with open Base) provides an intermediate reading
for maximum accuracy of subsequent Gain test.
(4)
GAIN:
Measures direct-reading beta in two ranges from a low reading of 2 (GXI range) to a maximum
reading of 500 (GX5 range) with predetermined selection of 5 Base current injection values as
follows:
0-50-200-500 Microamperes
0-2-5
Milliamperes
Crystal Diode Tests
ALL DIODES ARE CHECKED FOR FORWARD AND REVERSE CURRENT AT PREDETERMINED APPLIED
VOLTAGES.
FOR DIODE REVERSE (Dr) TESTS: Current ranges from 2 microamperes (lowest reading) up to 50 milliamperes
are automatically panel-selected at anyone of 17 predetermined voltages (from. 5 to 100 volts).
FOR DIODE FORWARD (Df) TESTS: Current ranges from 5 milliamperes to 500 milliamperes are provided at
anyone of 17 predetermined voltages (from. 75 to 75 volts).
©
Paco Electronics Co., Inc. 1958
t.:
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