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So maybe two of your supplies then for 10 smartsockets? That's better than possibly 5 Taylor... at least that's how I see it!Bill
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Here's what I was thinking. Major difference from the 20 watt version is the main switching MOSFET, which is over twice as beefy. The inductor I used on the 20 watt was overkill so this should take better advantage of it. Size is the same as before; practice makes perfect!You'll also need a 5 amp 12 volt adapter to get the kind of juice you're looking for out of this thing!
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Out of curiosity I'm going to try changing the switching frequency and increasing the inductance, with the aim of meeting my original goal of full output at 12 volts. Can't hurt to try.
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I've published another post covering changes and further refinement to the design: https://neonkev.com/2019/09/27/40-watt-boost-converter-running-into-physics/With another Digikey order on the way, hopefully my next tweaks will get me down to 12 volts! If not, the design is still perfectly functional as-is, and I expect to be releasing it before the end of the year.
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Are the 2 inductors paralleled ?
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Design is up for sale on Tindie! I have enough parts to make 6 as of now. If there is a larger demand, I'm keen to buying more.
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Bill
Just bought mine Kevin!
Bill
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Bill
Bill
Bill
Are you sharing your board designs as open source?Or will you sell bare PCBs??
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USPS says package arrived UK six days ago, no update since and no package
Would you be able to check from your end?
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USPS says package arrived UK six days ago, no update since and no package
Would you be able to check from your end?
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Thank you. Oddly USPS has it as having left London Heathrow on the 24th, no updates since. The UK handler Parcel force confirmed that it has not been scanned into their network ☹️
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After a lengthy phone conversation with USPS representatives, they submitted an internal request for an update on the package. Hopefully it is still in transit to you, and maybe forewent some local scans in the UK. I shipped another unit to Australia the same week and the tracking history looks similarly sparse, with the package arriving just today.Of course, I'll keep you posted. Thanks.
On Wed, Oct 30, 2019, 7:32 PM Kevin A. <ka...@scarletmail.rutgers.edu> wrote:
I see that on my end as well. I do not send packages to the UK often, so I can't comment on whether this is normal or not. I did just submit a formal search request for this package through the USPS website and I'm calling USPS now. As it is after business hours, if I cannot reach anyone tonight I'll place another call tomorrow early in the day.I'll keep you posted with any updates. Worst case, if it is determined to be completely lost I can recover the insured value and send you another package (with a different carrier).Thanks,
Kevin
On Wed, Oct 30, 2019, 7:13 PM Richard Scales <ric...@scalesweb.co.uk> wrote:
Thank you. Oddly USPS has it as having left London Heathrow on the 24th, no updates since. The UK handler Parcel force confirmed that it has not been scanned into their network ☹️
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Glad to hear it finally arrived! Looking forward to your feedback and seeing it in action on the ZM1350 project.On Tue, Nov 12, 2019, 1:46 PM Richard Scales <ric...@scalesweb.co.uk> wrote:Hello!After nearly a month after ordering - I am informed that the eagle has landed! (I am informed by Parcelforce in the UK that it is a busy time of year!). I am working away all week but my wife sent me stage by stage pictures of the package being unwrapped!
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Richard,
Adding caps is not likely to improve things since your ripple current will increase, and only serve to make things hotter. If you suspect the caps (very possible) just replace them with the same value.
Bill
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This is the board with the two micros and BMP sensor, it takes GND and 5V in, the NodeMCU TX connects to the Nano RX and the Nano outputs the Data and HVctrl to the Smart Sockets and HV PSU.
This shows the HV PSU and Buck Converter, some screws missing so not quite straight! - the Brown/Blue cabling is the 12V supply, Red/Black is the 5V supply, Green is used for both HV and HV control. You can see the backs of the smart sockets which are on the other side of the black perspex panel.
Here is the whole thing including the board with the micros - currently hanging loose - it was designed to be mounted on the four posts at the left hand end of the black perspex panel.
I left it all running yesterday and the corruption was there on and off - mostly on! All the time the HV and 5V 'looked' clean (according to my scope) though there were clearly issues. It could perhaps be down to something non related though when I switch the HV supply for the NCH module - running only 6 tubes, order is restored (with the same wiring).
All pointers gleefully received!
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OK, here we go..<snip>
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