Electronics > Beginners
Mini TS100 soldering iron and current leakage
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wraper:
BTW I have TS100. Tip is not connected to PSU GND, only to grounding screw. However there is 100n capacitance between PSU and the tip, which easily allows AC leaking from PSU to the tip.
KL27x:
Yes, the design of t12 tip looks like it could make a good capacitor.

I agree essentially all "esd safe" irons i have seen are earthed directly. 8n some case that might be necessary to stop the the AC ripple. In all cases it makes the iron safer to use in case of contact of tip with live voltage rail. Only the project may be damaged over the user being electrocuted.

But it there are many irons that have a floating tip. And people use these for esd sensitive components without any problem. Radio shack 2 prong firebrand got many hobbyists by for years. If  floating it good nuff, 1 mohm is better. For t12 iron on a shoddy smps, floating isnt good enough, so 1 mohm might not be good enough, either. But if u add 3 prong, u can presumably ground the dc return directly and remove the problem, despite the tip remains floating or attached thru 1 mohm. Or direct, if that is your preference for personal safety issue. If working on mains and lower voltage, i am gonna be fine with floating tip. If circuit is mistakenly live, the handle of the iron will insulate me. And perhaps i still manage to notice the circuit is live before i kill myself. Rather than 90 percent chance i blow up my project and blackout my lights, lab equipment, and computer.

Maybe if u use earthed iron this is another reason to put the iron on the joint first, before touching the solderwire to it. So u trip the circuit breaker before testing the joint with your left arm tingle detector. ;)
stj:
the DS80 is not a digital station, it's older than your poster.
KL27x:
Cool. Maybe it was made before the we became so sue happy. And people had personal resposibility. I believe you, stj.
KL27x:
Since so many people viewing this thread have t12 iron, can someone tell me how many connectors are on a t12 tip? My clone tios are on a slow boat from china and i need to work out the drive circuit.
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