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Modello:
747
Data:
Categoria:
Gruppo:
Descrizione:
Tube Tester
Informazioni
FEATURES
VERSATILITY—The Dyna-Jet model 747 tube tester checks over
99% of all vacuum tubes in general use in television
receivers, radios, and audio equipment. Over 2500 tube types
are listed in the tube chart.
FAST “JET-CHECK” TESTING —Most of the popular television and
radio tubes can be checked on the “Jet-Check” section, which
requires setting only the HEATER and SENSITIVITY controls
before testing can begin.
PROGRAMMED TESTING—All tube types which cannot be tested in
the “Jet-Check” section can be given the same type tests in
a separate programmed section. A program switch for each pin
of the tube sets up the test circuit. Such programmed
testing means the instrument is obsolescence proof; all new
tube types that are introduced can be tested.
DYNAMIC TESTING—Amplifying tubes in either the “Jet-Check”
or programmed section are given a true dynamic mutual
conductance (Gm) test. Diodes and rectifiers are tested for
emission. Test results are reliable, even for high voltage
regulators. A large, easy-to-read BAD—?—GOOD meter displays
the test results.
HIGH VOLTAGE REGULATORS—A special dynamic test has been
designed into the model 747 to properly test high voltage
regulator tubes with proper plate current. Some competitive
testers destroy tubes with a high current emission test,
while others test with insufficient current which results in
all tubes testing good. This special dynamic test injects a
signal voltage to the grid and another much higher voltage
applied to the plate. After extensive set testing and
circuit design we now have a test that separates the good
tubes from the bad.
SHORTS TEST—A single pushbutton shorts test checks shorts or
leakage between elements. Leakage paths up to 1 megohm will
light the SHORTS lamp, and leakage as low as y% microampere
can be detected on the meter.
GRID EMISSION TEST—A single pushbutton test checks gas, grid
emission, or grid-to-cathode leakage by a sensitive grid
current check. Grid leakage paths of 100 megohms can be
easily detected on the meter.
LIFE TEST—A single slide switch checks life expectancy by
dropping heater and operating voltages 10% to determine the
tube’s reserve capacity.
DUAL SECTION TUBE TESTING—Each section of a dual section
tube is tested separately. Therefore, tubes with identical
sections can be checked and selected for balance between
sections. This is convenient for selecting dual section
tubes to be used in push-pull circuits.
TUBE CHART—The tube chart is an integral part of the tester.
It lists all set-up instructions for testing each tube type.
Pages are indexed for ease and speed in locating tube types.
Over 2500 listings cover nearly all tube types available.
Additions are published regulary to add the newest tube types.
VOLTAGE REGULATED—Compensation for line voltage variations
gives highly reliable test readings at all times.
PORTABILITY—The rugged, easy to carry case, which is made of
molded plastic, allows the tester to be carried into the
home on service calls, or used on the bench.
PIN STRAIGHTENERS—Five built-in pin straighteners
accommodate all tube types with flexible pins.
Tipo di manuale:
Pagine:
3
Dimensione:
157.55 Kbytes (161329 Bytes)
Lingua:
english
Revisione:
ID del manuale:
Data:
1971 01 01
Qualità:
Documento scansionato, tutto leggibile.
Data caricamento:
2018 08 06
MD5:
24542887a6ac096180b8da1bae59c955
Scaricamenti:
356
Tipo di manuale:
Manuale d'uso
Pagine:
61
Dimensione:
15.87 Mbytes (16641263 Bytes)
Lingua:
english
Revisione:
ID del manuale:
Data:
Qualità:
Documento scansionato, la lettura in parte male, non in parte leggibile.
Data caricamento:
2018 08 07
MD5:
666d400efd83b18340531939efdfc7d9
Scaricamenti:
472
Informazioni
Setup Chart
Tipo di manuale:
Manuale d'uso
Pagine:
31
Dimensione:
1.85 Mbytes (1942366 Bytes)
Lingua:
english
Revisione:
ID del manuale:
485-115-9-001
Data:
Qualità:
Documento scansionato, tutto leggibile.
Data caricamento:
2018 08 06
MD5:
d8d10ff2c92114808c30afa080c5570f
Scaricamenti:
349