It is totally free of cost for new learners.
I want to tel you about to circuit designing.
First of all You have to collect the material of Circuit Designing.
- Screen Cloth T-120 that is cloth which used to make the photo printing system.
- Emulation PC99.
- Becromite Chemical.
- Benzine.
- wooden frame.
- Binding solution.
- Printing Ink
- after this you have to select the circuit of the needed Item and have to make a layout of the components.then you draw it at a Transparent Paper called (Transparency )or make the sketch on your PC and print with laser jet printer at the Transparency.
- Now for the printing of the PCB You have to fix the Screen at the frame. Now get the emulation PC99 and pore a little Benzine in to make it thin and three drop of Becromite .
- Get a rubber scraper and spread the Emulation on the screen .
- Store it in dork room to dry it.
- when screen is Dry put the sketch on it and a glass sheet on the sketch.
- put it in the sun light for one minute.
- wash it with water , now your sketch will be clear on the Screen.
- After draying the Screen You put the Screen on a Copper coted Sheet and spread the Ink on Screen.
- When You will separate the Screen from Copper sheet you will see the sketch will be printed at Copper sheet.
- Put it in the sun light till l it go dry.
- Dip the Copper sheet in Ferric Acid solution and agitate with any thing.
- You PCB will be Ready within one Hour or less.
- It is my own experience and want to tell all other friends for there Knowledge.
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