Re: [Homebrew_PCBs] Re: power supply circuit for nim bin module
2016-01-13 by Stefan Trethan
The NIM standard requires relatively high precision and low noise which you will not find in ordinary consumer power supplies. The question is if you really
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Re: power supply circuit for nim bin module
2016-01-13 by john_chortomaris@...
If I had known I could made!!! I d like to made a simple psu. only I know is that, must be a linear. which of electronic module haves same characteristics with
Re: [Homebrew_PCBs] power supply circuit for nim bin module
2016-01-13 by Brad Thompson
... Hello, John-- You might want to expand your description of the power supply s requirements. For instance... --Required output current for both outputs,
Re: [Homebrew_PCBs] power supply circuit for nim bin module
2016-01-13 by Harvey White
... Your easiest path would be to find pre-built modules that supply the required voltage and current. Your next easiest path would be to check out application
power supply circuit for nim bin module
2016-01-13 by john_chortomaris@...
Hi all, could any member in this forum to design portable dc/dc power supply with +/- 6v +/-12v voltage?
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-13 by leeleduc@...
I use Staples Color Laser Paper, 8 1/2 x 11 , Glossy, 300/Pack item# 633215. It works well for me with the laser / laminator combination. It Should work with
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-13 by lilacbarn@...
Thanks DuWayne. That was really helpful. If I get any reasonable results with the Kodak paper I will post. Geoff.
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-12 by duwaynes@...
I have tried several different types of paper and the best I found is labeled HAMMERMILL COLOR LASER GLOSS It is thinner than the photo paper I tried, it is
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-12 by lilacbarn@...
Hi DuWayne. Thanks for your added and slight variation on the original instructable. 3 Questions: 1) is your Hammermill paper of the glossy photo type or a
RE: [Homebrew_PCBs] Re: Samsung ML-1860
2016-01-12 by camillus
Hi , I googled samsung ML-1860 reset and this was just a couple of reactions:
RE: [Homebrew_PCBs] Re: Samsung ML-1860
2016-01-12 by satdaveuk@...
Hi Anyone here know of a simple way to reset my usage counters Got plenty of toner left but not letting me use due to print count. Regards Dave
RE: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-12 by rolohar@...
Besides: You are not going to take a bath in the stuff! At most, you will have a few CC s out in the open, or a few eyedroppers full. Per directions.. you are
RE: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-12 by K5ESS
Well using a respirator and gloves is a good idea in any case but: EPA has classified mixed xylenes as a Group D, not classifiable as to human carcinogenicity.
Re: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-11 by Corey Minion
One remark, please use respirator & gloves when handling xylene. The stuff is 100000x more carcinogenic than we knew pre 1990. I remember working in billboard
Re: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-11 by rolohar@...
DuWayne: Thanks for the detailed account of your heatless toner transfer experiment. As I suspected, the need or exotic materials is not required. There are
RE: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-11 by duwaynes@...
Liquid Tin by MG Chemicals. I think I got it from Amazon over a year ago and still using the same 4 oz bottle. DuWayne
RE: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-11 by Jeff Heiss
How do you tin your boards? Looking good. From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: Sunday, January 10, 2016 2:42 PM
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-10 by duwaynes@...
I have been using toner transfer for years with my Brother printer and a Scotch Tl902 laminator, with great success. Only problem has been that I need to use
portable power supply NIM module
2016-01-09 by john_chortomaris@...
Mech-Tronics 512 cart need power which refer on the front panel. this is +24v /0.01A (10mA) , -24v/0.02A (20mA) , +12v/0.1A (100mA) -12v/0.05A (50mA) . I
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-08 by keith printy
IÆve heard the term before. I work in heating and cooling and some of the refrigerant blends are described as such. They say it is 2 or more components but in
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-08 by Nuno Tavares
Azeotropic ? There s another term I never heard before. Another thing to read and learn! Thank you! Nuno T. ... From: Homebrew_PCBs@yahoogroups.com
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-08 by keith printy
Dextrin is an ingredient in most white glue’s it is also used in fireworks . they mix it with water and sometimes a little alcohol. I would think water
RE: [Homebrew_PCBs] Re: Heatless (cold) Toner Transfer for PCB making
2016-01-08 by keith printy
I remember molecular sieves ,but would they get all the water ? what was nice about them you could bake them and reuse them From: Homebrew_PCBs@yahoogroups.com
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-08 by leeleduc@...
Distillation of ethanol will only produce about 95% ethanol. The mixture of ethanol and water produce what is known as an azeotrope. Azeotropes are a mixture
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-08 by Donald H Locker
Further to that, acetone is miscible with water which is really easy to find, so that may be an adequate diluent. I feel a bout of experimentation coming on!
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-08 by Donald H Locker
To get past 95.6% requires something other than distillation to separate the alcohol from the water. At 95.6%, the ethanol and water boil off simultaneously at
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-08 by keith printy
To get it past 96% maybe they distill the alcohol again to further reduce the water content ? remember alcohol boils at a lower temp than water that is how a
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-08 by keith printy
You could just set up your own still and make it. Alcohol boils at a lower temperature than water , so when you distill it the alcohol boils off but the water
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-07 by rolohar@...
1. It seems that the primary functions of the alcohol are to (a) clean the PCB and and artwork, and (b) dilute the effectivity of the acetone, then I do not
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-07 by leeleduc@...
I ve watched the video of the process using ethanol and acetone. The ethanol looks liked it s used to dilute the acetone to make the solution less aggressive
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-07 by Jean-Paul Louis
Hi Steve, I agree with you. I just found out about the Everclear product. 190 proof is 95% pure ethanol, so it should work just fine for the purpose. 73 de
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-07 by alienrelics@...
Everclear 190 proof is available for around $30 per liter, after tax. Not sure why everyone is getting worked up about getting even more pure ethanol. Steve
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-07 by Corey Minion
No Methylated spirit (Meths or denatured alcohol—but not Rubbing alcohol which is different) is ethanol which has been rendered toxic or otherwise
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-07 by Howard Chester
Correct me if I m wrong... But isn t brandy, whiskey and vodka consist of denatured Ethyl Alcohol?If you make up a simple still to concentrate a few Liters
RE: 3-D printer resist application? (was: Re: [Homebrew_PCBs] Anyone milling PCBs?)
2016-01-07 by Jeff Heiss
This guy is using a UV laser to remove paint on a PCB. http://gabuleu.blogspot.com/ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
RE: 3-D printer resist application? (was: Re: [Homebrew_PCBs] Anyone milling PCBs?)
2016-01-06 by Bob Butcher
I have used this technique with spray cans of paint, and it works fine. The biggest problem I had was the lines cut were a bit narrow. At the time I had access
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-06 by rolohar@...
Roger Blair: Your point is well taken. We do not know that the character and quality of the materials indicated in the Heatless Toner Transfer write-up are
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-06 by Roger Blair
Yes, Expensive enough to do a needs/cost/benefit reality check! My point was that greater than 99% purity was available... As a hobbyist, I would start with
Re: Heatless (cold) Toner Transfer for PCB making
2016-01-06 by Ancel
It s an interesting method....useful for smaller boards and probably a little cheaper than toner paper/hot transfer & foil transfer, but carries a higher risk
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-06 by Jean-Paul Louis
WOW, that’s really expensive! $144.10 per liter + hazardous material fee + shipping. Jean-Paul N1JPL
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-06 by Roger Blair
FYI... http://www.sciencelab.com/page/S/PVAR/SLE2248 General Chemical Specifications*: *Assay (C_2 H_5 OH; by Volume) Min. 99.5% Water (H2O)0.2% Roger Blair
Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-06 by Jean-Paul Louis
Pure Ethyl Alcohol (Ethanol) will be the hardest to find in the US. All the pharmacies in the US now carry IPA (Iso Propyl Alcohol) which is not Ethanol. 96%
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-06 by keith printy
If you are in the united states you can get acetone at ace hardware stores or boat supply shops. It is used for thinning fiberglass resin. Last time I bought a
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-06 by alienrelics@...
It says Ethyl Alcohol, which is often denatured. Not everyone uses the same denaturing agents. However, in one of the comments he says: The one I use is Ethyl
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-05 by MIKE DURKIN
Can we assume that s denatured alcohol ? ... need to get some acetone .... where do you get pure stuff ? To: Homebrew_PCBs@yahoogroups.com From:
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-05 by Nuno Tavares
Certainly worth trying! Thanks for sharing. Nuno T. _____ From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: terça-feira, 5 de
RE: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making
2016-01-05 by MIKE DURKIN
that look neat .... ill need to try it soon To: Homebrew_PCBs@yahoogroups.com From: Homebrew_PCBs@yahoogroups.com Date: Tue, 5 Jan 2016 08:18:17 -0800 Subject:
Heatless (cold) Toner Transfer for PCB making
2016-01-05 by leeleduc@...
Saw this on Instructables.
RE: 3-D printer resist application? (was: Re: [Homebrew_PCBs] Anyone milling PCBs?)
2016-01-04 by Dave G4UGM
Well 3D printers don’t “spray” they “extrude” and folks use various tricks to get the stuff to stick including heating the board, hair lacquer,
RE: 3-D printer resist application? (was: Re: [Homebrew_PCBs] Anyone milling PCBs?)
2016-01-04 by keith printy
Wouldn’t the board need to be heated so the resist being sprayed from the 3 D printer would have time to get on the copper before it solidifies? From: