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Output Current
Posted: Wed Apr 18, 2007 5:16 pm
by Gnu
Is it possible to increase the source current on a 16F88 by sending binary 1 to two bits of a port and then paralleling these outputs (subject to the maximum current for the entire port/chip) ?
Posted: Thu Apr 19, 2007 9:24 am
by Benj
Hello
You would have to carefull doing this. Either by using resistors to avoid damage to the I/O lines or by making certain that both pins changed state at exactly the same time.
However it is a lot easier and safer for the PIC to use a second chip eg a 74lsxxx buffer chip to boost current.
Posted: Thu Apr 19, 2007 9:43 am
by Steve
If you connect to a pin with an open-collector output, you should be able to get more current (current will depend on the value of the external pull-up).
Output Current
Posted: Mon Apr 23, 2007 9:43 am
by Gnu
Thanks for the prompt replies, Benj & Steve.
Re: Output Current
Posted: Fri Feb 01, 2008 8:51 pm
by tian
why don't you use analog buffer?
OR
why don't you use voltage to current converter if you need current?