The
GZ34 Gallery
5AR4 |
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Many rectifier tubes have been made by the Philips company. All
I know are of outstanding quality. Many tubes from which I knew
that they worked for many years still test as new tubes.
All tubes have the following common charecteristics (except where
otherwise noted):
-
6 square holes in each plate
- center hole in guiding pin
-
5 pin connector on octal socket |
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Tubes from Dutch
and Belgium Production |
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Code: rsB 54
Identified by:
- No hole in guiding pin
- one closed getter
- no plate holes
- Straight plate sides
Comment:
One of the
first GZ34 tubes made.
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Code: f31 X8X
Identified by:
- Two D
Getters
- code from
below - not on glass
- Straight
plate sides
Comment:
1958 type made
in Brussels. |
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Code: rs1 55A
Identified by:
- No hole in guiding pin
- Two D Getters
- no plate holes
- Straight plate sides
Comment:
Very early
version.
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Code: f33 L0J
Identified by:
- Two D Getters
- no plate holes
- brown base
Comment:
Made in 1959. Rarer than metal base. Click here!!!
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Code: tv1 56H
Identified by:
- Two D Getters
- Straight plate sides
Comment:
Last version
of the metal base GZ34 until 1957 (as tv2 coded). |
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Code: f32 X9G
Identified by:
- Two D Getters
- flatter top
- Straight plate sides
Comment:
Another
1959 type made in Brussels. |
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Code: f33 L2H3
Identified by:
- Two D
Getters
- Straight
plate sides
Comment:
Early 60s type
made in Brussels. |
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Tubes from British
(Mullard) Production
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Code: f32 B5B3
Identified by:
- Two ring
getters
- only 8cm
heigh
- 4-ribbed
plate side
Comment:
Later mid 60s
type made in Blackburn, U.K. |
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Code: f32 B6I1
Identified by:
- Two ring getters
- 4-ribbed plate side
Comment:
Quite similar to the
left tube, but slightly larger. |
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Code: f32 B3J1
Identified by:
- single ring getters
- 7-ribbed plate side
- red shining plate borders
Comment:
Early 60s
version - found in many stereo HiFi tube amps. |
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Code: f32 B7F4
Identified by:
- single ring getters
- 4-ribbed plate side
- red shining plate borders
Comment:
Late 60s type
from England. Found in many later Leak stereo amps. |
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GZ33
Code: rS1 B4C5
Identified by:
- base ring
getter
Comment:
Just to
compare. |
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