Title of Activity : PIC controlled board & PWM circuit board.
Objective :
1) To estimate the controlled board looks alike.
2) To control the heat by using PWM method.
Content / Procedure :
1) List down all the control component.
2) Draw the circuit in PCB lab and print out the circuit.
3) Hatching the circuit regarding on that had setting in the PCB lab layout.
4) Solder the component on the circuit board.
5) Test the circuit.
Result and Analysis :
1) The controlled board consist of :
- programmable integrated circuit (PIC)
- a power rectifier AC to DC
- LCD (16x2)
- push button
All these elements will be attached to the board.
2) Power rectifier function to convert alternate current (AC) to direct current (DC) by using transformer step down (240V/9V) as main supply for control board.
3) Push button as selected menu & LCD to display temperature & receive the decoded signal from PIC.
4) PWM will receive decoded signal from PIC to control the heater,where it more like switch for heater.
5) The main component in this circuit is MOC3041M, where this device consists of infrared emitting diode optically coupled to monolithic silicon detector performing the function of zero voltage crossing bilateral triac drives. It's designed for use with a triac in the interface of logic system to equipment powered from 240V AC lines such as solid relay.
Conclusion :
1) The controlled board need to design more specific & functional, so that to make it run smoothly.
2) PWM circuit need to functional because it's control the temperature that created by the bulbs.
PROCESS OF CONTROLLER BOARD CIRCUIT of PWM & PIC.
a) Step 1 : Figure shows the PWM circuit in PCB board layout.
b) Step 2 : Figure shows the PWM controller board circuit in hatching process by using acid.
c) Step 3 : Figure shows the PWM controller board circuit after hatching.
d) Step 4 : Figure shows the components in soldering progress on the PIC controller board circuit.
FINAL PICTURE
Really great work,I would like to join your blog anyway to know much better about printed circuit board.
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