Picture of 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.

Picture of aluminum case from Aluminum Square Tube.
case (3).jpg
aluminum case  has dual role.

first one is            protection cover.
and second is    heat sink for MOSFET.

Step 2: Drilling holes

Picture of Drilling holes
board (7).jpg
POT fixing on aluminum case.
MOSFET fixing.

Step 3: Circuit diagram

Picture of Circuit diagram

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

circuit diagram source:

Step 4: Circuit board soldering.

Picture of circuit board soldering.
board (1).jpg
board (2).jpg
board (4).jpg

Step 5: Final assembly

Picture of final  assembly
final (9).jpg
final (10).jpg
final (1).jpg

Step 6: Testing with 12V/35W lamp

Picture of testing with 12V/35W  lamp
test_lamp (4).jpg
test_lamp (2).jpg
test_lamp (3).jpg
test_lamp (6).jpg
test_lamp (1).jpg

Step 7: Working video

Picture of working video
inventable11 months ago

Hi, the original project and the circuit diagram are in: