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Pars, May 1, 2010 in Do It Yourself
Pls keep your spamming to HF thx
An all in one would be nice, with some sort of PCB mounted xfmr. Seems like the EI-30 types that Amb spec'd are harder to find these days.Sent from my iPhone using Tapatalk
Sure, I'd be up for that.
Interested to see what you guys come up with! The one I designed ended up being too big still (my PCB width hack didn't work ), so I'm going to use the Mean Well ac/dc module like in the Dynalo mini. Even the Mean Well version barely fits.
What 3D package are you doing those in Justin?
I was messing around trying to figure out how to do voltage switching with 2 transformers, 1 using a relay to switch on (ala Amb e24), but handling voltage switching for 120/240. Does the below schematic look feasible?
Still using Kicad and its 3d libraries, haven't had time to look into Eagle again.
Maybe I don't know how to read that schematic or maybe it's in a separate sheet but I am not seeing any relay drivers or 12V supply. The operation of the e24 seems to be a bit different as that is using a low voltage switch to turn on high voltage relays for line AC. The V&K voltage selector unit is already a line voltage switch and can handle 250VAC at (?) 5A, so however you would connect it to one transformer's primaries, just put the second one in parallel.
None of that shit is in yet, i was just messing around with doing the voltage switch and having AC relays in for the main transformer. I think I basically did just parallel the 2nd set of primaries with the first, with the relays after that. I realize that when switched to 240V both relay contacts are in series but as far as I could see, that is the only way to do it. Of course I could cheat and use something like a MeanWell for the relay/e24 thingie...
Done some work on this. I've come to the conclusion to do the logic I'd like, I really need a microcontroller. So, going to start from scratch with that assumption. Sigh.
So, general features I am after are:Momentary switch operationRemote trigger inputSupport for more than one temperature sensor (not thermal breakers)Antiparallel bi-color LED indicationSupport for AC-DC switcher and AC transformer footprintsHigh current relay control (mechanical and SSR, though I am done with SSRs)Probably three PCBs - transformer, control and relay. Other requests? Maybe IR control?
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