Automatic light picture. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Automatic light picture. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Color and music installations, garlands

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Color music did not live up to expectations. It was replaced by dynamic lighting installations controlled by camera operators. The automata will never replace the artist, and the color and music settings have been preserved only on some "Loch Ness" tape recorders made by friendly countries for our rural workers.

Many people still remember old radios with their "green eye" - an optical tuning indicator 6E1P, later replaced by 6E2P and 6E3P. I like 6E1P, because its glow is associated either with a "dancing queen", or with a strict and angry conductor (depending on the nature of the music). Indicators 6E2P and 6E3P draw some kind of charts similar to the ups and downs of the national currency.

The optical tuning indicator is an interesting lamp. It has elements of a television tube - a luminous screen and the movement of an electronic stream in space. From 6E1P it is possible to make an automatic light-dynamic micro-image by applying 1 sound signal to the grid. When matching the input of a lamp with a sound source, it must be borne in mind that lamps have a very large input resistance (like field-effect transistors), and triodes (and 6E1P - a triode) are very sensitive. To solve the phase problem, I suggest using a euro plug and a low-current fuse.

Automatic light picture

The voltage for the first 7 and second fluorescent 9 anodes (see figure) is rectified by a diode (D7Zh, D226B). The resistor (120-150 kOhm) serves as the load of the first anode, and by selecting the capacitance of the capacitor (4,7 μF 350 V), you can adjust the voltage on the second anode. Transformer T1 (TV3) incandescent.

I do not exclude the possibility of 6E1P working as part of tube amplifiers, the best in terms of sound depth (High-End). Enjoy your evenings spent with good music. And for those who are older, also childhood memories ...

Author: Yu.Borodaty

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