An attempt at building a SLR inverter

ritaismyconscience, Sat Mar 16 2019, 05:02AM

My inverter seems to have killed the flyback. Also, it seems like I need a better core (and maybe a transformer without a diode) because this one seems to be saturating (the circuit pulls 25A at its peak).
Re: An attempt at building a SLR inverter
ritaismyconscience, Sat Mar 16 2019, 05:21AM

Sorry for double posting, but editing doesn't work on my computer.

Here's the link: Link2
Re: An attempt at building a SLR inverter
ritaismyconscience, Sun Apr 14 2019, 06:05AM

Update: I got a transformer from a microwave and I used it. Now it works much better. I can only run it off 50VAC because if I go any higher, it arcs over the safety gap (this thing is only designed for 2kV) and it spits steel sparks all over the place.


Waveform when shorted: Link2

Video of it working: Link2,dur,ei,expire,id,ip,ipbits,itag,lmt,mime,mm,mn,ms ,mv,pl,requiressl,sc,source,susc& signature=646010E3EA9F255914E2EAAFEF4BFF551CB9EDAE .213DD6871996F11E23342361B105400A82987D98& key=cms1&redirect_counter=1&cm2rm=sn-n4vll7s& req_id=500613f9f1ffa3ee&cms_redirect=yes&mm=34& mn=sn-a5mlrnes&ms=ltu&mt=1555221696&mv=m

Link2

C=4.8uF, leakage = 16.5uH
Re: An attempt at building a SLR inverter
Patrick, Mon Apr 15 2019, 03:53AM

in my experience external secondaries are undesirable and the cylinder type flybacks seem to do poorly, presumably the diode as you said.
Re: An attempt at building a SLR inverter
johnf, Mon Apr 15 2019, 09:48AM

Why would anyone pull an arc off a flyback inverter
with poor leakage inductance
all the arc energy is reflected back into the primary driver with excessive voltage transients (caused by the leakage inductance).
Arcs cause high dV/dt and high dI\dt both very destructive to solid state electronics
Re: An attempt at building a SLR inverter
ritaismyconscience, Tue Apr 16 2019, 07:08PM

I'm using a full bridge.