sd455dan
Elite Member
- Joined
- Oct 23, 2012
- Messages
- 4,791
- Location
- North Idaho
- Tractor
- Rhino 554, Ford 550 TLB (JD X500, MTD, Gilson riding mowers) Ford 3000-Sold
Agree with yomax and others about letting the electronics run for a bit before use.
I purchased an (inexpensive) 3 in one welder /cutter and the technology incorporated in them peaked my interest in learning a little about how they work.
Some interesting things that came to light in the bit of research
most seem to utilize a switch mode power supply- they take the ac line current and send that directly into a bridge rectifier, so if my math is right there is about 350 volts peak to peak Ac and 175 vac going into the diodes, if on 240ac supply
So... if there is any condensation on the board from say bringing the unit in from the cold it would seem to me that there is a fair chance of some arcing taking place if the board has any conductive airborne particulate that has settled there and even more so in the much higher voltage pilot arc plasma section.
Even though mine is only a couple months old- Made me think twice about just hitting the switch before i got the garage warmed up...
Thought while out there would use my old Tektronics mil-spec scope and figure out the frequency the inverter runs at. - hadn't used the scope in months turned it on and about 10 seconds later -POP- 1!!%$#@@* :laughing:
I purchased an (inexpensive) 3 in one welder /cutter and the technology incorporated in them peaked my interest in learning a little about how they work.
Some interesting things that came to light in the bit of research
most seem to utilize a switch mode power supply- they take the ac line current and send that directly into a bridge rectifier, so if my math is right there is about 350 volts peak to peak Ac and 175 vac going into the diodes, if on 240ac supply
So... if there is any condensation on the board from say bringing the unit in from the cold it would seem to me that there is a fair chance of some arcing taking place if the board has any conductive airborne particulate that has settled there and even more so in the much higher voltage pilot arc plasma section.
Even though mine is only a couple months old- Made me think twice about just hitting the switch before i got the garage warmed up...
Thought while out there would use my old Tektronics mil-spec scope and figure out the frequency the inverter runs at. - hadn't used the scope in months turned it on and about 10 seconds later -POP- 1!!%$#@@* :laughing: