Palec Paton Electrical PTY LTD V.C.T. Miernik charakterystyka zaworu
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Model:
V.C.T.
Data:
Kategoria:
Grupa:
Opis:
Valve and Circuit Tester
Informacja
The object of Paton Electrical Proprietary Ltd., in
releasing the “Palec” Model V.C.T. is to place in the hands
of the serviceman, a single self-contained instrument that
will adequately cope with all general outside service
problems and yet be conveniently portable.
The instrument will be found extremely easy and quick to
operate and can be relied upon for a high degree of accuracy
if treated with reasonable care and_ not subjected to
excessive overload.
INSTRUCTIONS FOR OPERATION.
The first test usually made on a service call is to test out
the valves This operation is carried out in the following
order:—
No. 1—ADJUST LINE VOLTAGE. Plug instrument into Power supply
and Switch on. Turn bottom left rotary switch to “LINE
CHECK.” The meter needle should now swing over to full scale
deflection. Should the needle stop above or below this
position, adjust by means of the top rotary switch marked
"LINE ADJ.” It is important in some districts to constantly
check the line voltage.
No. 2—Select correct filament voltages as shown on chart.
No. 3—Plug in valve.
No. 4—Test for inter-element shorts and leakages. While the
valve is heating, move bottom left rotary switch to
‘'ELEMENT SHORTS.” Now rotate the selector switch (middle
right) from point to point round the full circle.
A shorted element or leakage even as high as 100.000 ohms,
will cause the neon electrodes to give oil a distinct and
definite glow. A very faint glow, which may sometimes be
apparent, can be disregarded.
If the valve passes the above test, proceed as follows:
No. 5—Move bottom left rotary switch to “Merit.”
No. 6—Turn selector switch to the point as shown on chart.
No. 7—Adjust range degree control, also as per chart.
No. 8—Press button marked “Press for Merit” and the meter
will show directly the condition of the valve.
In the case of cathode type valves, allow plenty of time for
the valve to become fully heated. This will show when the
meter needle stops creeping and remains stationary.
N.B.—'The meter dial is calibrated to show the percentage
efficiency of a valve. A variation of 10'c or so may be
noted in some valves, particularly those of different
manufacture. This is quite normal.
DIODE PLATES—A comparative test can be made on the Diode
plates by turning “Range Control” to maximum position
(unless otherwise stated) and “Selector Switch” to the
respective point as shown on chart, marked DA.
The readings of both plates generally register between the
40% and 60% margin on meter dial, and should be
approximately the same.
TO IDENTIFY THE SHORTING OR LEAKAGE ELEMENTS. The points of
the Selector Switch correspond to the various elements of a
valve and are numbered according to 1935 standard practice,
with the exception that Valve Cap is numbered 8.
Typ ręczny:
Instrukcja obsługi
Strony:
10
Rozmiar:
11.66 Mbytes (12222725 Bytes)
Język:
english
Rewizja:
Ręczny ID:
Data:
Jakość:
Skanowany dokument, czytając częściowo źle, nie częściowo czytelny.
Data przesłania:
2017 08 20
MD5:
96eade4ea1adfbb5828f652c9a4ff9e0
Pobrane:
638