Electronics > Beginners
Mini TS100 soldering iron and current leakage
stj:
the real answer is to open the psu and replace the 2pin inlet with a 3pin one.
re-case it if you have to.
or go on ebay and get a chinese metal-frame 24v 6a+ psu
also the iron should really be earthed through a 1meg resistor incase of earth faults in the building.
it will let the iron disipate static etc, but will limit the current to a safe level if anything bad happens.
stj:
is it this?
https://www.sainsmart.com/pro-32-digital-oled-programable-soldering-iron-station-embedded-interface-dc-5525.htm
they are saying 40w?
the iron can pull 70w at 24v.
so either the psu is under voltage, or under-rated, or they are just full of shit!
what's the spec printed on the psu?
their wiki says "With 19V 2A power supply, SainSmart Pro32 takes only about 11 seconds to heat up to 300 degrees."
is that what they are supplying??
wraper:
--- Quote from: stj on June 28, 2017, 02:03:17 pm ---also the iron should really be earthed through a 1meg resistor incase of earth faults in the building.
it will let the iron disipate static etc, but will limit the current to a safe level if anything bad happens.
--- End quote ---
All grounded equipment is always connected directly to the earth. Including tips of all ESD safe soldering stations. No 1M resistors there. If there is the earth fault, there will be much worse problems in your house as your PC, fridge, washing machine and most of other equipment is directly connected to it too.
stj:
my old weller DS80 used a limiting resistor - it's in the schematics.
also, Hakko 888D has the option by moving a pin on the iron connector.
(with / without resistor)
bodger:
--- Quote from: stj on June 28, 2017, 02:12:59 pm ---is it this?
https://www.sainsmart.com/pro-32-digital-oled-programable-soldering-iron-station-embedded-interface-dc-5525.htm
they are saying 40w?
the iron can pull 70w at 24v.
so either the psu is under voltage, or under-rated, or they are just full of shit!
what's the spec printed on the psu?
their wiki says "With 19V 2A power supply, SainSmart Pro32 takes only about 11 seconds to heat up to 300 degrees."
is that what they are supplying??
--- End quote ---
Yes that's the one (link is broken now). They supply it with a 19V power supply, but it can operate between 12-24V (they claim 17W to 65W, which is accurate you will get 65W @ 24V) typically these irons do not come with a PSU (Sainsmart has just decided to supply one, with an EU socket). They are fairly accurate with the heating time, I timed it at around 12sec with the 19V supply against the temperature sensor on my extech using a k-type sensor and it hit roughly 300degC.
The iron itself is fine, they should have been a bit more wiser and supplied it with a grounded PSU. Other than that I'm pretty happy with it.
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