Project Design


4- stages Project Scheme's:

The Project was divided into 4 stages as shown below:




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Power Electronics Stage Calculation and Simulation

 The circuit contains a Bridge Rectifier, Buck-Boost DC-to-DC Convertor, and after all the calculation was done to find the suitable components values for the Buck-Boost DC-to-DC Convertor Or-Cad software was used to simulate the Electronic circuit as shown below:



The output voltage from the bridge rectifier circuit shown below:


The output voltage from the buck-boost converter circuit shown below:

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Project Implementation:


Full wave bridge rectifier with RC circuit implementation .
1- 4 Schottky diodes
2- Capacitors, each 1000uF


The driver chip must provide at least 10v to the MOSFET otherwise a regulator will be needed.


Buck-boost converter circuit implementation
1: MOSFET (IRLB3036)
2: Schottky diode
3:Capacitor of 68uF
4:Inductor of 68uH



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Testing and Improvement:

Full wave bridge rectifier with RC circuit output



Buck-boost converter output in orange color


Buck-boost converter output after twisting wires and shorten them


Improved Buck-boost converter circuit

1.      An oscillator of 8M and a 1KΩ were connected to a PIC16F84A microcontroller.
2.      A 7812 regulator was connected to the driver chip.
3.      A 7805 regulator was connected to the PIC16F84A microcontroller.
4.      A 7805 regulator was connected to the buck-boost circuit.
5.      A diode and a zener diode were connected in series to the MOSFET of the buck-boost converter to reduce the transient of the converter's output.


Microcontroller pulses



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PCB

The schematic diagram for the electronic circuit using Dip Trace


The BCP Layout for the electronic circuit


Top Layer Bottom Layer