Except, at the moment when reset button is pressed there is a huge (though short-lived) current through a diode and open transistor. A much easier reset mechanism would be to simply turn power off.
You're absolutely right. I need to put a... I guess a 2.2k would be fine... resistor there to limit current. I had that in there during an earlier cut of the circuit but took it out because of vertical space limitations.
Also, I'm not at all sure that the top gate of the left NAND(s) is being actively driven at all times. I think I need a 100k pull-up on it to make sure it goes high when the transistor is off. Right now the only thing driving it high is reverse-leakage through the diode... not something one should depend on.
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Also, I'm not at all sure that the top gate of the left NAND(s) is being actively driven at all times. I think I need a 100k pull-up on it to make sure it goes high when the transistor is off. Right now the only thing driving it high is reverse-leakage through the diode... not something one should depend on.
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I am having this issue: http://knownissues.livejournal.com/902.html
And consequently I cannot correct my post. :P
Maybe it's time to move to DreamWidth like J. Grant did...
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Corrections made to post.
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