HOME MADE DOUBLE SIDED PCB

If you are interested to make any electronic circuit the PCB is required and if the circuit is a bit complex the single sided PCB doesn't works so it require the Double Sided PCB. I have made the Double sided PCB at Home the steps are very simple and easy to do. steps are

1. Get the printout of the PCB mirror image on the "Photo Glossy" paper by a Laser Printer in Best Quality since we are going to transfer the toner printout must to in the Best quality and the paper is to be Photo Glossy. Photo Glossy Paper easily allow the Toner to be transfer on the PCB coper clad.

2. Clean the copper clad properly using fine emery paper.

3. Fold the Printout paper in a precise way so the drill hole matches exactly for both top and bottom layer of the PCB. then put the coper clad with-it. Press with the hot Iron for about 10 Minutes for both sides.

4, Peel off the Glossy Paper from the PCB and we can see the toner transfer on the copper clad.

5. Now take the concentrated Ferric Chloride Solution  and put this copper clad within it for about 20 minutes. stair the solution if you feel so. and observer in between. if you find the all extra copper is removed from the plat take it out from the solution.

6. wash the clad with the water and when it dry remove the toner (Black Ink) from the surface of the clad with a help of any paint thinner.

7. now drill the hole for the component.

8. it is double sided PCB so through hole is required. to do that i have used a very thin wire passed through the hole and soldered it both the side of PCB. it is tedious job but it is the only way i find to do the through hole at home.

9. Now your PCB is ready for populating the components.

Please Contact us for Handmade PCB Single/Double Side, Electronic/ Microcontroller (Arduino) based projects. Projects are available in ready and may develop as per the customized demand for the students and professionals. You may visit the blog spot brainstorm.blogspot.com and may visit the youtube  to see the work. You may Write to us on brainstorm.abc@gmail.com or contact us +919624782874

Voltage Doubler using 555 Timer

This dc voltage doubler circuit produces a voltage that is about double its input voltage supply. This is useful when a higher voltage level is needed out of a single lower voltage power supply. 

The electronic circuit is a square wave generator using the LM555 timer IC. It is followed by a stage made of transistors Q1 and Q2. The actual doubler circuit is made of diode D1, D2 and Electrolytic Capacitor  C5 and C6.

The 555 timer IC works as an astable multivibrator and generates a frequency of about 8 kHz. 

you may use C3 0.01uF also, it will generate about 7kHz. if you want to use the input vltage up to 12 volt then the electrolytic capacitor raring should be 50V.

The square wave output drives the final stage made of Q1 and Q2. This is how the doubler works: by a low amplitude of the signal, transistor Q1 blocks while Q2 conducts. The minus electrode of the capacitor C5 is grounded and charges through D1. By a high amplitude of the signal, transistor Q1 conducts while Q2 blocks. However, capacitor C5 cannot discharge because it is blocked by D1. The following capacitor C6 is therefore charged with a combined voltage from C5 and the power supply.

To Download the Schematic and PCB layout click here . it is a double sided PCB layout. 

On standby, the circuit delivers around 20 volts. The maximum load must not exceed 100 mA. 

On lower current ratings, the voltage is higher.

Please Contact us for Handmade PCB Single/Double Side, Electronic/ Microcontroller (Arduino) based projects. Projects are available in ready and may develop as per the customized demand for the students and professionals. You may visit the blog spot brainstorm.blogspot.com and may visit the youtube   to see the work. You may Write to us on brainstorm.abc@gmail.com or contact us +919624782874