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renewableMark Guru Joined: 09/12/2017 Location: AustraliaPosts: 1678
Posted: 09:41pm 02 May 2018
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Klaus, I'm interested in the choke you did on P31. Just to clarify, you used two of the bigger inductors from the aerosharp 3kw, glued two side by side, split them at the airgap joins. Then made a former and would 18 turns of 1.8mm x 9 layers and assembled on the cores. Have I got that correct?Cheers Caveman Mark Off grid eastern Melb
Boppa Guru Joined: 08/11/2016 Location: AustraliaPosts: 814
Posted: 11:44pm 02 May 2018
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I have one question re that 15A double GPO, is that the only way it connects to the house?
Reason I asked was I found out (after partially melting a similar twin 15A) was that they are (well the clipsal ones at least) rather at 15a TOTAL from both outlets, not the 2x15a ie 30a total I assumed they would be...
Running a stick welder and air compressor at the same time for extended periods (making a cattle crush) resulted in a rather sad looking gpo, rather saggy looking in spots...
As it was only just over a month old (having been installed specifically for this job) claimed warranty, and that was when the clipsal dealer told me that.... Now has 2x 15a single outlets stacked on top of each other to get the full 30a capacity that was originally intended
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904
Posted: 09:36am 03 May 2018
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If you look at the pictures on the previous page (right side view) you will see a bit of yellow plastic at the top of the inverter frame.
On that are the + and - battery terminals *and* a terminal for the fixed 235VAC to my house. The 15A outlets at the front are for testing - they handled the 5KW load - and to monitor the AC wave form. I also plug a power board in there for my various plugback AC/DC used nearby.Klaus
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904
Posted: 10:01am 03 May 2018
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Thanks for your interest Mark. I did not end up using the 18 turn choke you mention but made a smaller one (from the smaller Aerosharp chokes) with 9 turns, wound three in hand at once and as many layers as would fit ( I think it was 6 layers).
I will do a separate post how I made them, it takes a bit of preparation to do a neat job with 1.8mm wire. There are some pictures and I have to gather my scribbled notes but watch this space.
Meanwhile I assume you have the following:
Access to a lathe. Skills to make a metal former to wind on - forget wood or plastic, tried that, did not stand up. Two part epoxy resin to hold the windings together.
Lots of patience - most important Klaus
Boppa Guru Joined: 08/11/2016 Location: AustraliaPosts: 814
Posted: 11:37am 03 May 2018
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No worries then, just making sure- anyone using those twin 15A gpo's should be aware of their limitations (I wasnt)
Tinker Guru Joined: 07/11/2007 Location: AustraliaPosts: 1904
Posted: 11:54am 03 May 2018
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I should think these dual GPO's are similarly rated than every plug in power board with 4+ sockets or even double adaptors.
They can only handle the power through their plug or one connection in case of the dual GPO's.Klaus
Hi Guys I have been following your thread about Building inverter using EGS002 driver board. I am trying to build inverter to output 15VAC using EGS002 driver board. My voltage supply to mosfet bridge is 20VDC. What would you suggest. 1. Feedback AC as in Figure 6.2 of EG8010 Datasheet or 2. Feedback DC (from rectify diodes) as per Figure 6.6 of EG8010 Datasheet. I am using circuit 6.2 from EG8010 Datesheet. with different resistors for voltage splitting,( no transformer) Thanks Al
MasterCATZ Regular Member Joined: 25/03/2011 Location: AustraliaPosts: 52
Posted: 10:25pm 13 May 2021
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are you still using those filters ? I was planing on doing the same thing and reusing the ones from my 3kw aerosharp's
Murphy's friend Guru Joined: 04/10/2019 Location: AustraliaPosts: 648
Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.
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