Antique radios, Old Time Radios
DO75
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Country:
Great Britain (UK)
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| Identical to |
DO75
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| Filament |
Vf 10 Volts / If 2 Ampere / Direct |
| Description |
"The DO75 operates at 1000 volts HT and dissipates 75 watts. Used as an output valve it gives a maximum undistorted output of 18,000 milliwatts with an optimum load of approximately 6,000 ohms. It is suitable for use in powerful public address equipments and "Talkie" apparatus. As a modulator it is capable of modulating fully a DO40 or DO40A valve." Mullard.
Pa <75W, Va < 1000; Ra 2000 ohms, 6mA/V
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature Advertisement, Wireless Engineer, April 1932
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