Dave M wrote:
Hello,
I have a PRS10 rubidium which gives a 1pps output. The output is a
10 us positive pulse.
I need to convert that to a 50:50 duty cycle pulse. Still 1pps.
I'm hoping for a simple circuit rather than having to use a pic.
I don't mind a bit of propagation delay, but I
I was wondering how one would even use a PIC.
You can make a 10MHz to 1PPS divider using a tiny 8-pin PIC. I have extras
here. Send me email off-line if you want one. Cost is $2.
/tvb
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On 07/22/2011 05:38 AM, Dave M wrote:
Hello,
I have a PRS10 rubidium which gives a 1pps output. The output is a
10 us positive pulse.
I need to convert that to a 50:50 duty cycle pulse. Still 1pps.
I'm hoping for a simple circuit rather than having to use a pic.
I don't mind a bit of
Regards,
David Partridge
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Magnus Danielson
Sent: 22 July 2011 10:02
To: time-nuts@febo.com
Subject: Re: [time-nuts] 50:50 duty from a PRS10
On 07/22/2011 05:38 AM, Dave M wrote:
Hello,
I have
How close to 50% duty cycle do you need. is 0.50 good enough or do
you need 0.5 ? If all you need is 15% accuracy a 555 timer
set up to make a 0.5 second pulse would work but if you need better,
then maybe a phase lock loop with a much higher than 1Hz oscillator
and then you divide that
On 07/21/2011 07:48 PM, Chris Albertson wrote:
How close to 50% duty cycle do you need. is 0.50 good enough or do
you need 0.5 ? If all you need is 15% accuracy a 555 timer
set up to make a 0.5 second pulse would work but if you need better,
then maybe a phase lock loop with a much
Chris wrote:
How close to 50% duty cycle do you need. is 0.50 good enough or do
you need 0.5 ? If all you need is 15% accuracy a 555 timer
set up to make a 0.5 second pulse would work but if you need better,
then maybe a phase lock loop with a much higher than 1Hz oscillator
and then
The PRS-10 already has a 10 MHz output locked to the 1 pps. Just count the
10 MHz.
I was working only with the information in the post that said only a
PPS was available. I was wondering how one would even use a PIC. But
if you have 10MHz then divide that down to 2Hz with decade counters.
Hello,
I have a PRS10 rubidium which gives a 1pps output. The output is a
10 us positive pulse.
I need to convert that to a 50:50 duty cycle pulse. Still 1pps.
I'm hoping for a simple circuit rather than having to use a pic.
I don't mind a bit of propagation delay, but I need to preserve
