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 a low cost PWM dimmer  using  NE555 and MOSFET  with DIY aluminium case.

Step 1: aluminum case from Aluminum Square Tube.

aluminum case  has dual role.

first one is            protection cover.
and second is    heat sink forMOSFET.

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Step 2: Drilling holes

POT fixing on aluminum case.
MOSFET fixing.

Step 3: Circuit diagram

components:

1,  555 ic
2, MOSFET  IRFP510
3, diodes 1N4148 x 2
4, capacitors -ceramic- 100nf ,10nf   47uf/35v
5, Pot  100 K Linear
6, resistor  10K 

circuit diagram source:
http://www.talkingelectronics.com/te_interactive_index.html

Step 4: circuit board soldering.

Step 5: final assembly

Step 6: testing with 12V/35W lamp

Step 7: working video

<p>Work!! is easy :)</p>
<p>Hi, the original project and the circuit diagram are in: </p><p><a href="http://www.inventable.eu/2013/04/18/63_led_dimmer_555/" rel="nofollow">http://www.inventable.eu/2013/04/18/63_led_dimmer_...</a></p><p>bye.</p>

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