The black-and-white television receiver "Sputnik-1" and "Sputnik-2" were developed and manufactured in several copies in 1959 and 1960.
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It is not established where these first domestic transistor TVs were developed and produced.
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Perhaps at the Omsk Television Plant, since Sputnik tube TVs were produced there.
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Perhaps this is the Leningrad Research Institute of Television ... Fully semiconductor TVs "Sputnik-1" and "Sputnik-2" are designed to receive broadcasts broadcast only on the first television channel (49.75 ... 56.25 MHz).
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The first TV uses 30 transistors, 9 germanium diodes and 9 selenium rectifiers, and the second 28 transistors, 7 diodes and 8 selenium rectifiers.
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Special non-standard and non-serial picture tubes are used in TVs.
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The first TV has a 23LK2B kinescope with an image size of 140x180 mm, and the second 25LK1B with an image size of 153x192 mm.
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Televisions are made in a desktop version, but their small dimensions and weight allow them to be used as automobiles.
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The case of any of the TVs is metal and coated with nitro lacquer.
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The loudspeaker is located on the side of the case.
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The TV set is made with six control knobs located on the back of the case.
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The battery is located outside and is connected to the TV through the connector.
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Structurally, any of the TVs is made on two printed circuit boards, mounted on a light metal frame.
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The use of p / n allowed to reduce the power and weight consumed by the TV.
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The only electrovacuum device is a kinescope with a rectangular screen.
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Beam deflection is magnetic, image focusing is electrostatic.
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Due to high p / p noises, mode fluctuations when temperature conditions change, power supply voltage changes, etc.
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a number of circuit solutions have been applied to reduce these effects on the operation of the TV.
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When developing TVs, designers used all the possibilities to obtain the highest efficiency from each cascade, without reducing the quality indicators.
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,null,ru,null,null,null,nullMain technical data: Sensitivity for the image channel 50 µV.
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Resolution in the center of the screen is 500 lines.
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The band of reproducible sound frequencies is 160 ... 6000 Hz.
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Rated audio output power 0.3 W.
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Power is supplied from a car battery with a voltage of 12 V. The described TVs "Sputnik-1,2" were shown at various radio exhibitions, including at the Exhibition of Economic Achievements in Moscow, but for technical reasons they were not included in the series.
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