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Forum Index : Microcontroller and PC projects : photos from sparky the inverter

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sparkey

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Joined: 15/06/2011
Location: Australia
Posts: 819

Posted: 06:35am 25 Aug 2011

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all the photos i can load atm till i get a tripod to mount my camera on sorry about the quality its a phone after all all these r under "soldering iron "

so have a squiz i will attempt some better photos but this is what i have atm regards sparkey

technicians do it with least resistance

VK4AYQ
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Joined: 02/12/2009
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Posts: 2539

Posted: 06:11am 26 Aug 2011

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Cyberspace got your photos or maybe it was Win 7 that ate them.

Bob

Foolin Around

sparkey

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Posted: 11:56pm 19 Sep 2011

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here is the switching circuit working at present....

technicians do it with least resistance

aargee
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Joined: 21/08/2008
Location: Australia
Posts: 255

Posted: 12:08am 20 Sep 2011

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Sparkey,

What sort of veroboard is that? It looks like double sided (if so, I'm interested knowing where to get it!) or is it just painted strips on the board?

- Rob.

For crying out loud, all I wanted to do was flash this blasted LED.

sparkey

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Posted: 03:24am 20 Sep 2011

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sorry to say its single sided but i think that its not a hard ask maybee you could cut two pieces and do it that way ..but somebody prolly makes double sided ....regards sparkey...

technicians do it with least resistance

sparkey

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Posted: 03:38am 20 Sep 2011

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if your looking for more of my pic`s look at "soldering iron by sparkey but i will be posting most of my gear on this topic from now on ...regards sparkey....

technicians do it with least resistance

vasi

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Joined: 23/03/2007
Location: Romania
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Posted: 09:57am 20 Sep 2011

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sparkey said sorry to say its single sided but i think that its not a hard ask maybee you could cut two pieces and do it that way ..but somebody prolly makes double sided ....regards sparkey...

That was brilliant, didn't thought of that...

Hobbit name: Togo Toadfoot of Frogmorton
Elvish name: Mablung Miriel
Beyound Arduino Lang

sparkey

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Joined: 15/06/2011
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Posts: 819

Posted: 05:42am 21 Sep 2011

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just cut 2 pieces the same size and just around the corners of the boards add a drop of some type of glue ..superglue and get an aligator clamp or g clamp to whold the bords together and leave it over night ...regards sparkey dont foget to leave the copper sides out ....

technicians do it with least resistance

sparkey

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Posted: 07:18am 28 Sep 2011

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here are some pics with the switching board inserted into the case and a couple of other pics...regards sparkey....still a works in progress have to sort out some pc`s for the small regs yet
......

Edited by sparkey 2011-09-29

technicians do it with least resistance

sparkey

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Joined: 15/06/2011
Location: Australia
Posts: 819

Posted: 06:00pm 28 Sep 2011

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here is the picture of a 2n3055 with 13 volt zenner to give a 13 volt rail as shown its upside down so you cant actully see the 3055 but its regulating down from the main buss 36 volts and also is the 14 volt rail regulator on the black heatsink thjen it feeds a 5 volt reg to power the switching cct....regards sparkey;....

and yes its still aworks in process but it is functioning as you se it here it needs alittle tyding up once i can get it of my bench and onto a table where i have 360 degreese access....regards...

Edited by sparkey 2011-09-30

technicians do it with least resistance

sparkey

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Joined: 15/06/2011
Location: Australia
Posts: 819

Posted: 03:44am 29 Sep 2011

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]
:::this is the discription of the switching cct::::

the maxi puts out the square wave to feed
the 4013 flip flop via a 100nf bypass cap

from there the outputs of 'q' and 'q-' are fed to the two bd 139 npn transistors

the outputs are then fed into the relay

the relay has a charge up cct time before the outputs are activated

reason for this is to give the maxi time to load and run the "pwm" program
so as to stop the out put running free

the transformer is a centre tapped 64 volt hence to say that the collectors of the array tr`s are connected on one bank at the outer sides of the transformer with the centre tapp connected to the input positive from the battery`s and the emmittes connected to negative "gnd"...two banks required ..this gives a modified square wave out put...

the outputs from the relays are fed to the bases of the two sets of output drive transistor banks for the main chopping voltage and current
switching of the heavy currents feeding the transformer....

there is a leak feed to a 1meg trimpot via a 100nf bypass cap off pin 1 "q" so
that reads the output back to the maxi mite frequency counter this
gives the correct frequency of one half cycle

that is "output is at 100Hz ,,so the report freq is 50 hz this is the tru freq
at the 240 volt line well very close to 50 hz ..i`m not game to try latching the 240 volt to the maxi so the output of the 4013 will have to suffice...

you will also notice the three trimpots they are for reading other voltages around the circuit and reporting back to the maximite....

here is the finished board except one voltage rail which i am yet to decide what that will be

here are some of the disply pictures sorry about the way they are taken but i only have my mob to take pics.....

Edited by sparkey 2011-09-30

technicians do it with least resistance

sparkey

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Joined: 15/06/2011
Location: Australia
Posts: 819

Posted: 09:30am 29 Sep 2011

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new pics here are some more picks the only thing running off my batterty`s is the computer here is a pict of my main amp meter and yes its wired backwards ..never bothered to change the poles round also you can see the altron driving the switch board cct and a rear look at the transistor array ..i also use a "k-v-m" switch with the mouse plugged straight to the "pc" and the kb and vga plugged to the maxi so i can switch from either...

Edited by sparkey 2011-09-30

technicians do it with least resistance

sparkey

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Location: Australia
Posts: 819

Posted: 12:17pm 29 Sep 2011

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also i would like to add that at present running the inverter itself and the maximite and the computer and 19 inch "l.c.d" screen and the kvm switch i am using aproxx 4 amps from the batterys ...in the day time i am usually getting an average of four amps from green power....regards sparkey......

technicians do it with least resistance

sparkey

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Joined: 15/06/2011
Location: Australia
Posts: 819

Posted: 05:43am 30 Sep 2011

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here are hopefully the final photos of the inverter with the boards mounted correctly and still a couple more to come but this should be the last pics....all hail "murphey"...