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More temperature stable analog Optocoupler
Can you explain the power you have available on the input side?
Sunday, 25 April 2010 - 15:53
Isolated DC:DC converter
Yeah, it does work. I was running this one off a 6V battery, hence the winding turn configuration. Thanks for the heads up on the offset voltage. I'll try and post some sort of...
Saturday, 24 April 2010 - 02:10
Isolated DC:DC converter
Ok, just an update. Pics of the beast in action below. Not too many speedbumps along the way. Its been a struggle to get the right ferrite core, still waiting for its arrival....
Friday, 23 April 2010 - 03:17
Can a silicon diode be used as an inaccurate zener?
Why not just use a few of these or similar in series? http://www.onsemi.com/pub_link/Collateral/P6SMB6.8AT3-D.PDF Reverse breakdown of a normal diode can break the diode. oddbudman
Thursday, 15 April 2010 - 12:26
MOSFET configuration for multiple-LED PWM
ESD Failure of the Fet? Also measure gate to source resistance of one you think is broken. Perhaps the cascading is helping isolate the fet so it is more susseptable to damage?
Tuesday, 13 April 2010 - 03:26
power supply design
How much current does your circuit draw?
Tuesday, 13 April 2010 - 00:44
NPN not working correctly?
Many Atmel outputs are specified for up to about 25mA (you should check electrical specification in the M128 datasheet). So you should comfortably be able to decrease the...
Sunday, 11 April 2010 - 03:56
ESD Simulation
Nice link there ArnoldB.
Saturday, 27 March 2010 - 09:03
I can not buy ATmega8L in China now - I don't know why?
Happy to see this thread ticking over. The 168 supply issue is really causing problems for us here now. Things aren't as simple as wacking another chip in and away you go. Tens...
Saturday, 27 March 2010 - 02:08
So, how does this make 180 V DC?
Just looks like a boost converter to me. http://en.wikipedia.org/wiki/Boost_converter PWM is generated by the AVR, and feedback control is done via the AVRs comparator. Quite...
Thursday, 25 March 2010 - 03:59
I can not buy ATmega8L in China now - I don't know why?
Gee, seems i'm not the only one.. https://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=90870
Wednesday, 24 March 2010 - 07:51
Where did all the ATMega328's go?
We're starting to face these problems of Atmel supply also here in China. Pretty dire situation for us right now, we call several appointed distributors however none want to give...
Wednesday, 24 March 2010 - 07:49

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