Circuit

Light intensity regulator

The device is suitable for indoor lighting power up to 1kw. The apparatus can be used to adjust the heater too. Then R1 should be increased to M47 - 1M and R2 - increased to 180K - 220K. D1 can be used Russian KU208G, KU208K. Q1 used Russian KT361, Q2 - KT315. Bridge  made from four Russian KD906. There are showed analogues for Russian components in the circuit diagram.

Blinking lamp

A simple circuit that blinks a small incandescent light bulb. Light bulb's blinking frequency can be adjusted with R2. Light bulb should be 3.5 to 6 V.

 Blinking LEDs

When you start the circuit, LEDs will blink alternately, that is, when one lights up, the other goes out and vice versa.

 Gentle brightness control

With this device you can gently adjust brightness of a small incandescent light bulb. There can be used Russian transistors: Q1 and Q2 - MП41A, KT208, KT209, Q3 - MП26B, KT208, KT209.

Light-board

When push-button and switch are turned on, the lamp is illuminated. When the push-button is off and switch is still on, the light goes off. Here is used a simple incandescent bulb. This device can be used for lighting some locking keyboard or something like that.

Thyristor switch

*****ATTENTION! HIGH VOLTAGE IS IN USE*****

LP1 - LP3 are incandescent lamps suitable for 220V and power of 60 W. C1 can be 20 to 200 uF and 300 V. The power of R1 should be at least 2 W. The power of R2 - at least 0,5 W.

Thyristor switch 2

*****ATTENTION! HIGH VOLTAGE IS IN USE*****

Incandescent lamp LP1 should be suitable for 220V. The max power of LP1 is 100W. R1 and R2 should be at least of 2W.

Light effects by music

 There are used small power incandescent light bulbs. Voltage of ligh bulbs should be choosed depending on the power supply voltage. Transistors Q1 - Q4 can be changed with Russian KT315, Q5 - Q7 - with Russian KT940A, KT807 or KT602.