Re: "Nixietherm" IN-9 bargraph based thermomer
10 years 1 month ago #1328
by Stuckey
"If the laws of physics don't apply in the future, then god help you."
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Replied by Stuckey on topic Re: "Nixietherm" IN-9 bargraph based thermomer
Jürgen sent me this work-in-progress photo a few days ago. But, I'm bad about posting things quickly 
"For a full length bargraph now the circuity draws only around 300mA @5V --> 1.5VA and this creates 10mA @ 120V --> 1.2VA (only 0.3VA losses); but I must also connect the MC34063A to the voltage doubler circuity (the flying IC "ICL7660" with the two diodes and the two capacitors) and not only the new BC639/640 driver stage for the MosFet...as the converter will shut down when the supply voltage is lower than exact 5V and it should normally just work at 4V."
"For a full length bargraph now the circuity draws only around 300mA @5V --> 1.5VA and this creates 10mA @ 120V --> 1.2VA (only 0.3VA losses); but I must also connect the MC34063A to the voltage doubler circuity (the flying IC "ICL7660" with the two diodes and the two capacitors) and not only the new BC639/640 driver stage for the MosFet...as the converter will shut down when the supply voltage is lower than exact 5V and it should normally just work at 4V."
"If the laws of physics don't apply in the future, then god help you."
www.ineedcaffeine.com
www.facebook.com/brian.stuckey
twitter.com/brianstuckey
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10 years 1 month ago #1331
by Mr.Nixie
Replied by Mr.Nixie on topic Re: "Nixietherm" IN-9 bargraph based thermomer
In Germany this helter-skelter up of the board is called a "wired hedge-hog" 
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