My sister gave me a Chinese-made table lamp for free
with voltage regulator,
faulty. I turned on a 100-watt light bulb, it burned out a bit and went out. The lamp itself is whole, and the lamp has ordered a long life. My sister bought another lamp, without a regulator, and it’s a pity to throw this out do it yourself.
I was just thinking about how to light up a computer keyboard. Without hesitation, he dismantled the lamp, threw out the voltage regulator, and installed a button switch in its place.
I also deleted the unnecessary parts, checked the condition of the cord and the cartridge, soldered all the connections with an electric soldering iron
and insulated with heat shrink tubes. The lamp was fixed on the wall with self-tapping screws,
I screwed a 3-watt LED lamp into the cartridge,
plug into the outlet, turn on - okay, everything works.
The voltage regulator remained lonely on the table.
Checked, the thyristor burned out, the remaining parts are serviceable. I replaced the thyristor with a domestic one, KU-202-N, in a plastic case.
Found a power outlet BU,
the socket is good, with spring-loaded contacts,
only the case is cracked. But for my homemade he is not needed. In the storerooms there was a case from the power supply unit of the old Dandy game console.
In the upper case lid, I strengthened the power socket on the racks, having previously drilled holes in the lid for the electric plug. There was a place for the Sino-Russian voltage regulator.
According to the wiring diagram of the dimmer
I connected an electrical outlet instead of a light bulb.
The result was a compact voltage regulator with a solid survivability margin.
