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sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 07:03am 26 Aug 2011
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technicians do it with least resistance
haiqu Senior Member Joined: 30/07/2011 Location: AustraliaPosts: 152
Posted: 08:19am 26 Aug 2011
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You've been busy!
To return to the topic, I use an old Weller TC201 with a standard #7 tip for most SMD work and it's good enough. It's all in the technique.unzip, strip, touch, finger, grep, mount, fsck, more, yes, fsck, fsck, fsck, umount, sleep
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 08:27am 26 Aug 2011
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have you got all the parts for the rtc yet ..regards sparkeytechnicians do it with least resistance
haiqu Senior Member Joined: 30/07/2011 Location: AustraliaPosts: 152
Posted: 08:30am 26 Aug 2011
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Almost ... waiting for two SMD parts, a resistor and a cap. They both come from the same supplier so will arrive together. Real Soon Now.
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 03:54am 28 Aug 2011
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the problem i am having is that the output from the cmos seems to float so it sits a little high before the maxi has time to run "autorun" so i think that i may need some pull down restors maybe a 4,7 k resistor from base to emmitter ore emmitter to gnd still thowing round ideas here but i` will work it out eventully ...regards spasrkey...technicians do it with least resistance
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 09:31am 03 Sep 2011
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here are some pics of the switching cct...after rebuilding using vero board
::
::with anti thump soft start relay board ....
here`s a better pict.....
Edited by sparkey 2011-09-05technicians do it with least resistance
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 09:14pm 04 Sep 2011
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heres a better pic of the switching soft start
technicians do it with least resistance
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 04:10pm 06 Sep 2011
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here`s some new pics of the screen output of the inverter
technicians do it with least resistance
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 11:36pm 09 Sep 2011
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i know my prototype looks crappy... but .. here is the revised edition of the
switching cct with the anti thump relay cct... to give time for the maxi to run "autorun so the voltage does not run high with no load connected "basically a soft start for the inverter"
:what are you looking at :::ok a cmos 4013 flip flop driving "not inserted yet...two "bd-139" and a 5 volt reg for power and a relay time up switch....regards sparkey...........
and also three trimpots 1 meg for setting the reported voltage rais ...which are:5 volt :L:9 volt: and 36 volt rails under normal charging range the 36 volt rail floats around 40 point 5 volts but when the inverter is running its around 38 volts under load....regards..
Edited by sparkey 2011-09-11technicians do it with least resistance
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 04:44am 10 Sep 2011
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here`s afew more picks soory about the quality all i have is my mob phone to take pic`s.....and i would like too add that my maxi has been running for one day 14 hours and 30 mins ...
Edited by sparkey 2011-09-11technicians do it with least resistance
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 04:34pm 10 Sep 2011
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who would of thoughttechnicians do it with least resistance
sparkey Senior Member Joined: 15/06/2011 Location: AustraliaPosts: 819
Posted: 07:04pm 28 Sep 2011
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thought i would send this up so some of my other pics can be seen by the guys over seas ...regards sparkeytechnicians do it with least resistance
Worm Newbie Joined: 30/06/2011 Location: New ZealandPosts: 38
Posted: 11:35pm 28 Sep 2011
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...wait till u cop a belt of the back of a picture tube
crt .... much the same as chewing on a spark plug lead....
My own experience was during my apprenticeship working on colour TVs. Playing with the EHT, it got me. Like putting my hand on the bench and someone hitting my hand with a sledge hammer. That woke me up.
Keep the good work up Sparky, you are nearly there.
Kevin
There's no such thing as a free lunch.
Gadget Regular Member Joined: 22/06/2011 Location: AustraliaPosts: 70
Posted: 10:54am 29 Sep 2011
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Know the feeling, wasnt a CRT but close, belted by the hv coil of the acceleration voltage on a mass spectrometer, arm was numb for the rest of the day
btw those photos of the boards on the bench looks like my workspace (without the system 80).
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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