High Current Spot Welder

182

03:11:49

High current.

published 6 years ago

hurz

6 years ago

An realistic arc voltage is about 20V. If you have 230VAC its here in everycircuit 325Vpeak configuration for AC sources. 230VAC is RMS and to get the peak value for sine waves you have to multiply the rms with √2 so you get 230VAC * 1.414 = 325Vpeak

ETJAKEOC

6 years ago

Hurz I've heard of the * 1.414 before, but my teacher preferred the ÷ .707 method, you have any knowledge about why/how these different formulas both work?

gasboss775

6 years ago

They are reciprocal's of each other : 1 / 1.41 = 0.707 and conversely 1 / 0.707 = 1.41

hurz

6 years ago

@ETJAKEOC, right as @gasboss775 says its identical, you can use both ways. /0.707 or *1.414 Because i calculate sqrt from 2 which is equal 1.414 I prefer this way

schmobi2001

6 years ago

Ok... thank you Hurz. I did not know that. So when I measure 230 Volts with my multimeter it is really 325 volts AC? So when I use a Oscilloscope instead, it should show a peak of 325 Volts, right? So a multimeter always displays the RMS?

hurz

6 years ago

Your multimeter does show RMS so it will display 230VAC for a 325Vpeak sinewave

ETJAKEOC

6 years ago

Oh yeah, I forgot about reciprocals, goes to show how much I math 😝😂

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