gold plating

mete said:
Page , at one time I became lab supervisor in Syracuse .I was checking supplies , etchants etc.You can find some very old stuff doing that .Then I came across two containers ,next to each other in a cabinet. One was an acid , one was a cyanide salt !!! Needless to say I immediately assembled the technicians and explained the facts of life to them ! There is actually a kit to save your butt when exposed to hydrogen cyanide but it must be used immediately !
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That is on the same order as when I was working for photo facilities at RIT (we were supposed to manage darkrooms, processing equipment and studios) and we found Clorox bleach in the photolabs, the bottle partly empty!
I alerted my manager, and we had a mandatory meeting for all of the people who are in anyway connected with the labs and darkrooms.
fortunately there were no chlorine incidents

BTW where can you get the cyanide kit?

-Page
 
sunshadow said:
So sorry!
SH_t has been hitting the fan at work (Can't wait to either be able to live on my own business or get a better day gig!) and I've been swamped with my work at home (several very intricate repousse orders due on the 15th and a bunch of fencing rapiers), I got distracted. I will try to get that tonight.

-Page
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Page please don't be sorry for something you're giving away..
I know things happen.. with me IT's CRS , I tell my customers to bug the hell out of me, because I forget things all the time.... :) if they don't bug me I may find emails from months ago that I missed or didn't get back to for one reason or another :o I'm not sure if it's to much to do or age?? :o thanks again :)
oh BTW take your time I'm in no hurry.. :)
 
Page, just google 'cyanide poisoning kit'. In another company technicians were making QC checks on gold plated electrical contacts. Only the chemist was paranoid so he had a kit .No one else knew how to use it and it had to be used IMMEDIATELY !
 
I put a link to the schematic I use which I just drew on the xerox of the manufacturers info about the chip about 20 years ago

http://www.sunshadowdesign.com/voltageregulator.jpg

If I remember correctly the capacitor between the ground (which goes to negative) and the output+ lead is 1000 microfarad, the capacitor between the input and ground is 100 microfarad, The potentiometer is 1Kohm if I remember correctly, although that and the resistance of the other resistor are relative to the voltage differential you are looking for, the resistor I used is coded gold, brown yellow red (I can't read resistor codes anymore and I don't have the little slide rule fom radio shack anymore) I used to make them up on a piece of testboard 1/2 inch by 1 1/2 inch so they'd fit in mini maglight casings
I would use a good bridge rectifier upstream and at least a good filter capacitor to clean up your waveform if it is coming straight off a transformer, the cleaner your current the more consistant your plating, also limiting your current will help to keep from boiling off your cyanide. I think the regulator is somewhat current limiting on its own

-Hope this helps somewhat, BTW don't trust parts from Radio Shack to work, i have yet to get 2 working solid state components in a row from them, on the other hand their rosin core 60/40 electronics solder if they still sell it is some of the best. Put heat sinks on your regulator terminals when you sloder them

-Page
 
sunshadow said:
I put a link to the schematic I use which I just drew on the xerox of the manufacturers info about the chip about 20 years ago

http://www.sunshadowdesign.com/voltageregulator.jpg

If I remember correctly the capacitor between the ground (which goes to negative) and the output+ lead is 1000 microfarad, the capacitor between the input and ground is 100 microfarad, The potentiometer is 1Kohm if I remember correctly, although that and the resistance of the other resistor are relative to the voltage differential you are looking for, the resistor I used is coded gold, brown yellow red (I can't read resistor codes anymore and I don't have the little slide rule fom radio shack anymore) I used to make them up on a piece of testboard 1/2 inch by 1 1/2 inch so they'd fit in mini maglight casings
I would use a good bridge rectifier upstream and at least a good filter capacitor to clean up your waveform if it is coming straight off a transformer, the cleaner your current the more consistant your plating, also limiting your current will help to keep from boiling off your cyanide. I think the regulator is somewhat current limiting on its own

-Hope this helps somewhat, BTW don't trust parts from Radio Shack to work, i have yet to get 2 working solid state components in a row from them, on the other hand their rosin core 60/40 electronics solder if they still sell it is some of the best. Put heat sinks on your regulator terminals when you sloder them

-Page
Click to expand...

thanks page now to look it over and build it :)
I have a resistor color decode book some where in my junk but
as long as I have the colors or the resistances needed that should do it..
thanks again... :thumbup:
edited : I resized the picture and posted it..below Thanks Page
http://www.knivesby.com/bfc/voltage-regulator-1.JPG

voltage-regulator-1.JPG
 
Welcome to the forums, Dan.

BTW, this thread is 18 months old. They probably got a transformer by now.

Stacy
 
I missed the thread.
I can gold plate parts for you guys. Unfortunately, gold is very soft, and doesn't wear well.
 
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