[sdiy] Idea for tuner/display

[Tim Parkhurst]

> -----Original Message-----
> From: Paul Perry [mailto:pfperry at melbpc.org.au]
> Sent: Monday, January 27, 2003 5:09 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Idea for tuner/display
> 
> Slightly related, I would like a simple digital
> way to indicate which of two square waves have
> the highest frequency.
> I know there must be an easy way.. but, I'm not the guy to find it!
> 
> paul perry melbourne australia
****************************************************************
Hey Paul,

Here's a couple of links. 

http://www.uslink.net/~cybercir/cir10.htm

http://www.atmel.com/atmel/acrobat/doc0475.pdf


The first looks to be the most promising. A very simple circuit that looks
like it might be an interesting jumping off point for some type of
switching/selecting/waveshaping module. The second link looks like it's a
circuit that compares in input freq to an internal filter center freq.
Interesting, but I like the first one better.

Let us know if you come up with something neat (and can sell us circuit
boards, parts kits and front panels real cheap).  ;)

And just for the heck of it, here's a tuner and freq counter link that
looked interesting. Tim R, you might want to check this out. 

Atmel micro-based frequency counter
http://www.linuxfocus.org/English/September2002/article253.shtml



Tim Servo



***************************************************************************
This message is confidential.  The information contained in
this e-mail message is intended only for confidential use of the
recipient(s) named above. If the reader of this message is not the intended
recipient or an agent responsible for delivering it to the intended
recipient, you are hereby notified that you have received this document in
error and that any review, dissemination, distribution, or copying of this
message is strictly prohibited.  If you have received this communication in
error, please notify us immediately by e-mail, and delete the original
message.
***************************************************************************