 |
|
| Identical to |
ACH1
= TH401
= 4M2
= WE40
= TACH1_7pin
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| Similar
Tubes |
TACH1 (other base)
ACH1_Tungsram (other base)
ACH1C (other base)
4M2_p8 (other base)
CCH1 (Other base and other base diagram)
ACH1_B7 (other base)
BCH1 (Heater different)
|
| First Series |
Feb.1934 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Jul.1934 : Funk, Die Zeitschrift des Funkwesens 1934 #31
|
| Predecessor Tubes |
RENS1224
|
| Successor Tubes |
1938
ECH11
ECH3
ACH1C
|
|
| Base |
Europe 7-Pin (C7A, C, 1933) (Codex=Lf)
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 1 Ampere /
Vf 4 Volts /
|
| Tube prices |
2 Tube prices (visible for members
only)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49 Entwicklungsfirma = Telefunken
|
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Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
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JR
Jacob Roschy
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
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| Further Information for |
ACH1 |
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ACH1 (ACH1) - Aufdruck "S * Bi"
(29.06.2006) Gerhard Eisenbarth
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Clicks: 515 Replies: 1 |
Auf einer ACH1 aus meiner Sammlung befindet sich der Aufdruck S*Bi, siehe Bild.
Kann jemand Auskunft darüber geben, welche Bedeutung dieser Aufdruck hat?
Das Bi steht für Bifilar und bezieht sich auf den bifilar gewickelten Heizer dieser
Röhre.
Aber was bedeutet das S im Aufdruck?
More ...
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ACH1 (ACH1) - produced with C7A or P8A base
(18.01.2006) Robert Sarbell
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Clicks: 768 Replies: 6 |
Tube administrators and members,
I have just recently bought some early tubes for the Philips AL161, and find there appears to be the Telefunken ACH1 produced with a C7A base, and also a Telefunken D.R.P. tube with the P8A base - the marking is clearly NOT the ACH1C tube that is shown with the ACH1 technical data.
I have seen many interesting posts related to the multitude of tubes - and even some from Herr Wolfgang Bauer which depicts the very interesting, and apparently occasional, non-standard tube types.
I realize there were many tubes produced with the P8A base; however, it appears as though most of them were the variant type ACH1C.
Respectfully,
Robert Sarbell
More ...
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