PWM Dimmer Using NE555 and MOSFET With DIY Aluminium Case.

 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.

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