Dimmer circuit

Posted on Feb 6, 2014

Dimmer, from the word n. dim, v. to dim . Simple device to make light of incandescence lamps lower. Also, used to slow down colector motors. All this started because Lithuanian internet is full of old soviet circuits with archaic components. Meanwhile other  world is using much better way to dim lamps. Component selection is not very critical:

Dimmer circuit
Click here to download the full size of the above Circuit.

triak BTB04-600SL (ST semiconductors, 600V, 4A, trigger curent 10mA), diak or trigger diode- DB3 ( fire at  32V), inductors was about 3mH. There are lots of versions of this circuit in the internet. In one version I saw 50uH inductor, T0609MJ and BR100. Just check if maximum allowed values are not outmeasured. Also, it is posible to find triak and diak in one package. I found one packade silicon device in some vacuum cleaner. As power of motor was about 1500W, triak-diak was with small aluminium cooler (~8 square centimeters).

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Variable Fan Controller
    Direction and speed control
    Ir Receiver I
    Tachometerless Motor Speed Control
    bjt Low voltage/current power supply for wide range of inputs
    control circuit for nokia tv tuner 5827
    microphone preamp circuit
    555 Timer as an Astable Multivibrator
    IR Headset Circuit with headphone Transmitter and Receiver diagram
    LM4610 Dual Dc Operated Tone/volume/balance Circuit With National 3-d Sound - National Semiconductor
    300m FM transmitter circuit design project
    Transistor Circuits
    SV3 Radio Magnadyne Radio