Light setup is very popular among young people. Scheme of another variant of this device suggested that the magazine “Radio, TV, electronics” (NRB). It consists of three color channels (red, yellow, blue) with frequencies section: 700 Hz to 3.5 kHz of 13.5 kHz. The design is greatly simplified thanks to the use of four similar blocks. “Filling” each block consists of two transistors and three resistors (see the diagram of block # 1).
As the input isolation transformer T1 can serve as a transition ТП12 transformer from radio receivers “Spidola”, VEF-12, etc. the Signal is fed on one half of the secondary winding, and remove it from primary.
The maximum power of the lamp — 1 kW, so the SCR must be installed on the radiators. Configure SMU variable resistors R5—R7.
Recommend to read
HANGER-IMPROMPTU
The nails in the wooden wall of the hallway of a country house as a hanger for clothes — not the best solution. Not much more time would it take the same ex-promtoe, but more...
MIG-15 — THE LEGEND OF SOVIET AVIATION
The history of the MiG-15 began after the Soviet trade representatives in 1946, Britain was able to purchase from the company a Rolls-Royce turbojet engine the most advanced of its time...
