It’s hard to imagine New year without festive lights and a Christmas tree with a mysterious flickering lights. However elektrogirlyandy industrial manufacturing not everyone is like: get bored of the monotonous flashing, and is harmful, they say it’s for health. I propose to replace these “flashers” an improvised device, lights which Shine like candles — with smooth change of brightness. Among its advantages are the simplicity of an electric circuit, which will be able to collect anyone, and the lack of scarce or expensive electronic components.
When included in the network garlands burn in pancala — through semiconductor diodes VD1, VD3 and VD5. Through the chain (VD2R1, VD4R3, V06R5) is the charge of the electrolytic capacitors C1, C2 and Sz, creating an increase in the control voltage on the thyristors VS1, VS2 and VS3. With the equality Uy = UolKp corresponding thyristor opens.
This triggers a semiconductor device VS2. Opening, it causes an increase in the brightness of the garland НЕ2. But stops charging of the capacitor C2, holding the moment of release VS3, and thus contributing to the already ongoing process of the charge capacitance CP.