It's a gadget for a car.
I'll use a 7805 to make a clean +5VDC.
It's a gadget for a car.
I'll use a 7805 to make a clean +5VDC.
Roger
I suppose that a 4700 is the minimum capacitor to use. There are .5 and 1 Farad capacitors in low voltage now available to power RTC's instead of coin batteries. Why not use one?
Take a look at http://catalog.digikey.com/scripts/p...?name=P6955-ND
Ioannis
P.S. By the way, nice instrument Luciano!
Last edited by Ioannis; - 23rd August 2007 at 10:17.
Hi, Luciano
Nice to see you back here !
mmmmmmh, By the way ....
You gave the PEAK current ... as it decreases with power Voltage.
A JFET could have been a better current drain than the 2.7k.
Were nice holidays, weren't ??? You're not totally back it seems ... LOL !!!
Best Regards
Alain
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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Hello Alain,
Could you give me some more details about how to connect the transistor and even why this would be a better choice please?
Roger
Hi,
If you have not done so already try turning off the brown out detect at the programming stage, this will stop the pic from resetting as the voltage drops. With a 2200uF cap that should work fine
Regards
Bob...
Last edited by BobEdge; - 23rd August 2007 at 15:27.
Hi Alain,
Thank you for appreciating my midnight engineering!
Best regards,
Luciano
Hi Roger,
Try that:
Best regards,
Luciano
EDIT: The Brown-out Detect Voltage (BVDD) is 2.025 — 2.175 V.
Try first with the internal Brown-out Detector enabled.
Last edited by Luciano; - 23rd August 2007 at 22:21.
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