"TECHNO"Amp building in progress-using "Iron Method"

zox2003 · 8th December 2006, 04:41 AM

Finally I decide to build amplifier for my self. After researching a lot I decide to
Ask my “country man” Dr. Bora Jagodic for suggestion .I was deciding between MOSFET or BJT amplifier.Just recently I received some of MJL 4302 and MJL 4281 and
Decide, with Bora’s help, to build his TECHNO amplifier. BTW, I am RF Design Engineer with some knowledge in LF band. Instead of designing my own PCB (which I could using Or CAD or PADS) Bora sent me his PCB Layout (pdf) which included bottom side (traces), component side and silk screen.
For first time I decided to try to use laser printer and iron (previously I used photo process).After number of experiments and hours I finally got everything working well.
I own big THANKS to Dr. Bora for help with this “project”.
I have 2 PCB’s ready to assemble. I ‘ll keep you updated on this project.PLEASE POST COMMENTS AND SUGGESTIONS!

Here are some pictures of bare PCB’s.

zox2003 · 8th December 2006, 04:43 AM

Silk Screen side was done using same Iron Transfer method:

zox2003 · 8th December 2006, 04:00 PM

So any comments or suggestions????

pinkmouse · 8th December 2006, 04:02 PM

Nice boards. Time for you to do some soldering!

kubeek · 8th December 2006, 04:44 PM

Could you post which kind of paper and for how long etc etc did you use?

I was once trying to use the toner transfer method, but with no luck. I had only few kinds of paper and neither wanted to fall apart or soak off and leave the traces without "hairs" from the paper.

Thanks
Kubeek

zox2003 · 8th December 2006, 05:28 PM

I used Staples Laser Glossy paper.
Before that I tried couple of other papers and it did not work that well.Ironed for about 2 minutes (Until I smelled paper burn).
Soaked PCB in warm water for about 5 minutes and peeled paper off.Used old toothbrush soaked in water and soap to clean some paper hairs.

Everything came out great.I was able to get fine print done this way.

kubeek · 8th December 2006, 06:39 PM

Edit: I just found a text in my language describing use of common
colored self-adhesive paper (water soluble), for children´s drawing etc, so probably my problems with drawing PCBs are solved.

But thanks anyway, it was you who made me search in my language and not in english. Now I don´t have to buy expensive boxes of photo-quality paper just for trying if it works, the set of those drawing papers costs something like 1$ for 20 sheets A4

boraomega · 8th December 2006, 10:05 PM

Sve sam video, veoma sam zadovoljan i od srca mi je drago sto si se odlucio za moj dizajn!

Zen Mod · 8th December 2006, 10:23 PM

Quote:

I used Staples Laser Glossy paper.

can you give me more details .......where locally you buyed that paper and which brand exactly is ............

TIA

zox2003 · 8th December 2006, 10:56 PM

I bought it at store called "STAPLES" here in USA.

8th December 2006, 04:02 PM	#4
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Nice boards. Time for you to do some soldering! __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

8th December 2006, 10:05 PM	#8
boraomega diyAudio Member Join Date: May 2005 Location: Cacak, Serbia	Sve sam video, veoma sam zadovoljan i od srca mi je drago sto si se odlucio za moj dizajn! __________________ If you are arguing with an idiot, first make sure that he is not doing the same thing.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
What makes an amplifier "bright", "warm", or "neutral"?	JohnS	Solid State	51	13th December 2009 07:42 PM
Building a 2.1 system out of a 48"x96" sheet of 3/4" MDF	454Casull	Multi-Way	0	18th November 2008 03:19 AM
The "Leap-Frog" Method Of Switching Amplifier Control Loop Design	analogspiceman	Class D	29	1st December 2006 04:21 PM
Some final pics of "Stacks" revisited and "Askew" with stand	Andy G	Multi-Way	2	3rd February 2005 07:07 AM
Anyone used Scan-Speak's "Flow Resistors" or "Aperiodic Vents"?	Ignite	Multi-Way	3	18th November 2001 09:42 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

8th December 2006, 04:00 PM	#3
zox2003 diyAudio Member Join Date: Nov 2004 Location: usa	So any comments or suggestions????

8th December 2006, 04:44 PM	#5
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	Could you post which kind of paper and for how long etc etc did you use? I was once trying to use the toner transfer method, but with no luck. I had only few kinds of paper and neither wanted to fall apart or soak off and leave the traces without "hairs" from the paper. Thanks Kubeek

8th December 2006, 05:28 PM	#6
zox2003 diyAudio Member Join Date: Nov 2004 Location: usa	I used Staples Laser Glossy paper. Before that I tried couple of other papers and it did not work that well.Ironed for about 2 minutes (Until I smelled paper burn). Soaked PCB in warm water for about 5 minutes and peeled paper off.Used old toothbrush soaked in water and soap to clean some paper hairs. Everything came out great.I was able to get fine print done this way.

8th December 2006, 06:39 PM	#7
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	Edit: I just found a text in my language describing use of common colored self-adhesive paper (water soluble), for children´s drawing etc, so probably my problems with drawing PCBs are solved. But thanks anyway, it was you who made me search in my language and not in english. Now I don´t have to buy expensive boxes of photo-quality paper just for trying if it works, the set of those drawing papers costs something like 1$ for 20 sheets A4

8th December 2006, 10:56 PM	#10
zox2003 diyAudio Member Join Date: Nov 2004 Location: usa	I bought it at store called "STAPLES" here in USA.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)