File:Grundig audiotapeTK1 hg.jpg

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English: Portable audio tape TK1 LUXUS by Grundig.
The TK1 was manufactured in 1960-1963, as a portable, battery-powered entry-level tape model - alongside with the "serious" mains-powered TK25/TK30..etc line. The TK1 weighed merely two kilograms (without batteries). Single speed 9.5 cm/s, around 15 minutes playback from the tiny reels. The TK1 had seven semiconductor devices and one subminiature vacuum tube - the DM71 "magic eye" indicator. The high voltage for the tube was generated via a winding of the bias/erase oscillator (sort of a "free" DC-DC converter). The batteries were strictly low-voltage, 6V for the electronics and 3V for the motor.
Deutsch: Tonbandgerät TK1 LUXUS von Grundig
Français : Magnétophone Grundig TK1 LUXUS
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Author Hannes Grobe 21:36, 5 November 2006 (UTC)
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