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Valve Gallery -
Output Valves (2)
Valves: PP2018,
HP4118, AC2/PEN, AC2PENDD.
 
| Shown above is a PP2018 output valve from
Tungsram. Rare valve designed for DC mains operation. Made in
Hungary, and used rarely in the U.K. market. The Sunbeam U35 is the
only receiver in the U.K. known to have utilised the "2018"
series of valves. B5 base with side contact, height of 125mm.
20v heater and output of 2.2w. |
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Shown above is another extremely rare valve, the
HP4118 also from Tungsram. 40v heater and C7 base. Again made
in Hungary, in the early to mid 1930s. Height 120mm. (C7 base,
6 pins, 4 of which congregated around one side of base, opposite side no
pins). |
 
| Two versions of the much used AC2/PEN in the
pictures above. The photo on the right hand side also includes two
diodes within the glass envelope. This reduced the number of valves
and holders required on the chassis as a separate diode valve is not
required. |
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Both are Mazda, with B7 base. AC2/PEN is
136mm high, whereas the AC2/PENDD above is 150mm high with top cap.
Both of 3.5w output and 4v heater. Useful in "short"
superhets. |
Continue to the next Output
Valves gallery page
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