Upgraded the SMALLEST Welding inverter 

yes

@@overbuiltautomotive1299 how does the choke enhance the arc start?

It reduces the spark starting current. Like a series resister, or like the soft start circuit he added to the main input circuit.

The inverter probably is an foward smps, so the choke is needed, because It works like a buck Converter, It s hard to explain, but the energy is transfered from primary to secondry, some of the energy is stored on the inductor, by adding this inductor you are increasing the stability and power of the welder, Hope you understand It.

No point Just get mig welder ...cud try the spool gun tho 🙂👍

By the time the relays turn on the primary cap's charge current has already been reduced to a very low value. So this provides a safe condition even if the relays are not synchronize. The combined 30A contacts will be needed during welding, but that is long after the soft start has ended.

I wondered what the failure mode would be if you happen to be touching the case of the inverter..... no ground is a bad deal

@@en2oh Get a ground fault circuit breaker if you are afraid - you know the welders output voltage is 25 to 70 so you could get zapped by that.

Today´s version of this product has a protective earth connection... machine costed me 30bucks, and I wasn´t really expecting that it has a protective earth connection, cause of all the older reviews that I´ve seen, where a protective earth connection was always lacking... But still lacks a built-in softstart till today (although it can also be implemented by a 2-stage-"on"-switch and an, admittedly expensive, power resistor, so, much simpler than shown here. In this kind of soft start, you have to manually isolate/disconnect the power-resistor, a couple of seconds after turning on the machine, so, not automatic, but consists only of a resistor and an "on"-switch)...

How?

The overall function of the machine is as a current regulator. Converting it to a regulated voltage would require a seperate circuit after the output terminals. It's possible, but other power supplies would work better.

Îf u don´t need the soft-start to automaticaly shut-off, but can bear doing it manualy, then just solder 2 leads on the 2 sides of the main-switch. Then connect a bulb-socket and a switch to those 2 leads. Then screw in a bulb in that has 20-30ohm initial resistance... online calculators can tell xou, how long you have to wait for the capacitor to be loaded through the bulb. Each time you wanna turn the welder on, turn first the bulb-switch on, and wait for some seconds (the online calculator can tell you how many seconds). After those few seconds have past, turn-on the main-welder-switch, and then, turn-off the bulb-switch. That´s a manual soft-start, it´s extremely easy to build (leads, socket, incandescent oldschool bulb, switch), and the only disadvantage is, that it´s manual instead of being automatic. But beware: Bulbs have 2 values for their resistance: A low one, for when very low currents run through them, and so, stay dark, and a high one, for when they are lighten-up. The minimum-resistance value you need is 20-30ohm, and the bulb you choose should fullfill that anyway, cause the initial current-rush is gonna face this lower bulb-resistance-value at first, which, nevertheless, has to still be high enough (20-30ohm). But when the bulb is lighten-up (0,1 seconds after you turn-on the bulb-switch, and I dont think that 0,1sec is long enough to fully load the capacitor yet), the resistance is much higher, and this will delay the capacitor-loading a lot. Still, for capacitor-loading, you have to use the high-bulb-resistance-value, in order to calculate the waiting-time, cause you want to use the soft-start until the capacitor is fully loaded, after all... The 2 resistance-values have a spread of around 13 times, that means, if an expensive soft-start-power-resistor (of the same resistance-value of 20-30ohm) needs 1 second to load the capacitor, a cheap soft-start-bulb will need 13 seconds of waiting-time. Of yource, it can be, that the capacitor is already half- or quarter-loaded (during the bulb´s low-resistance-phase) before the bulb-resistance reaches its high-value, so, you surely have to wait way less than 13-times-longer (maybe 5 instead of 1 seconds, but surely not that long as 13 instead of 1 seconds. seconds-values are examples), but you have to find that out for yourself... Of course, you can always use a power-resistor in the same way, instead of a bulb, and get a much faster soft-start (1sec vs. 13sec of waiting-time as an example): leads, socket, power-resistor, switch = manual soft-start.

What for she showed it on video lol

I'd say about 3 !

@@scottrich976 BRILLIANT.

No. A ferrite choke is for ac circuits.

@@d.t.4523 I found out long after asking this that you can use one but you need to introduce an air gap since the magnetic permeability of a ferrite core is too high and it will saturate at too low a current, but its not hard to break one in half after scribing it and then use some tape or something for the air gap.

@@sidewinderam9m Great. I'm glad to hear you weren't waiting for my reply. Seven months could get boring without an engineering degree. 👍 😂

@@d.t.4523 Lol. Thanks for the reply. I always appreciate when someone takes the time to do it.

@@sidewinderam9m You're welcome. Better late than never, eh! Have fun even if you don't build your own.

Asep Saepudin hey I hope that you are not complaining? It’s not her fault that she doesn’t use hand conditioner or have her nails done in a salon. She’s offering a service in what can be done to the most smallest welder, I’m grateful for that, are you?

@@theonlybuzz1969 nope

Electronically altered voice.

From what I can gather, the man speaks in Russian in his original videos. Then a woman translates the voice into English.