texaspyro wrote:Kin wrote:I didn't see anyone using graphite as a electrode.
I've used graphite electrodes for doing thermocouples. They don't contaminate the weld with foreign metals and don't need all that much current... graphite does not conduct all that well.
rkosiorek wrote:what was your source for the graphite? any pictures or suggestions for electrode construction?
Alan B wrote:Arduino (AVR) pins don't have enough drive for these short pulses, a driver is needed between the micro and the FET gates.
mortain wrote:yes, ok...but what' s the trouble when you increase the capacitance of the circuit?, because I see few ultra capacitors which have very very low ESR ( bcap1200p270T05=0,56 mohm!!!) much better than audio car caps . I remember the threaads p 32 of this forum ( thanks to cesare250495 and Jeremy Harris) and the texaspyro comments... If amperage is pregnant, is it possible welding with a very low voltage
zakipu wrote:I have only one question for texaspyro: what are you using for vent sensing?
mortain wrote:Ok, thanks everybody. one moment, i have hoped that we could weld under the 15 volts
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