Use Spehro's PLL idea with an 8-bit counter in the feedback loop.  Your
signals are slow enough that it should be able to maintain good lock and
provide evenly spaced pulses.  Take a look at a 4046.

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Patrick J
Sent: Tuesday, August 21, 2001 3:18 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: Howto make 0-50 hz into 0-400 ?


>..or build a circuit that generates 8 pulses on each input edge - you
>could probably do this with a 4017 CMOS counter.

hmm, I had some wild idea about doing that.. but wonderd howto make
the 8 pulses come evenly spaced and still not overlap into next 50 hz cycle
if the pulses are too far apart it will still be dong pulse 7 or 8 when next
50 hz pulse comes.
Tho you got me thinking.. maybe theres no need to have the pulses evenly
spaced but just fire 8 times as fast as it can take it basically - should
work.

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics