Especially as the inverting gates have independent source and/or drain
connections - series resistors can be used to lower even more the
consumption when biased in the linear region...
On 6/28/2013 7:20 AM, Don Latham wrote:
Maybe the old 4007 cmos would be better...
Don
paul swed
Yes it
Hi
Low power and system load are both worth putting some dimensions on.
A very simple system may be ok with a single client running into it and
nothing else going on. A system that will handle 500 hits a second is
something altogether different.
Low power could be 100 watts, it also could
Well I have the garmins already laying around and I would like to give
'm good use.
Folkert van Heusden
OK, Folkert, but a handful of resistors would easily convert the levels to
the Raspberry Pi, so you could add a couple of stratum-1 servers that way.
I think the problem is that if you are not clear about what your big
picture goal is then yu only get a bunch od not so helpful comments like
use this is worked for me..
So what exactly do you want. Are you looking for a very low power, say
under 5W server. Something that is very easy to
I noticed my Z3815A was show 0ns (zero) for predicted uncertainty tonight.
Is there something wrong or is its predicted holdover uncertainty below
measureable (displayable) value?
Is there a pForth command that would give me an accurate figure for PHU?
My 5 other Z3805A smartclocks are all in
Hi
The holdover prediction is entirely dependent on the OCXO and how it's
behaving. Your OCXO likely had a pair of events that caused the aging estimate
to get very low.
Bob
On Jun 28, 2013, at 8:16 AM, Mark C. Stephens ma...@non-stop.com.au wrote:
I noticed my Z3815A was show 0ns (zero)
Hi
If you are running a cheap switcher, you can have a *lot* of crud. 78L08's
aren't very good at rejecting high frequency stuff.
Bob
On Jun 27, 2013, at 11:27 PM, Arthur Dent golgarfrinc...@yahoo.com wrote:
The OCXO in the TBolt has a linear controller. It drops back to about
150 to 250
My Z3815A has never shown a holdover prediction in the ns range...
maybe it needs a very long running time (years) to adjust the
SmartClock parameters. Mine has been on for only 1 year.
On Fri, Jun 28, 2013 at 2:25 PM, Charles P. Steinmetz
charles_steinm...@lavabit.com wrote:
marki wrote:
I
All:
My Z3801 no longer works, and I've not been able to get any new ideas on
it, so am looking for a replacement.
I've come across a nice 10 MHz that has very good phase noise (-145db or
so at 10 KHz offset), but costs $175 in single quantities (digi-key, I
think.) I was considering using
Hi
On Jun 28, 2013, at 9:45 AM, Jim Sanford wb4...@wb4gcs.org wrote:
All:
My Z3801 no longer works, and I've not been able to get any new ideas on it,
so am looking for a replacement.
I've come across a nice 10 MHz that has very good phase noise (-145db or so
at 10 KHz offset), but
Bob:
Thanks.
You correctly anticipated that I will use this to lock a 100 MHz
Oscillator, and either multiply or lock from there. (I'm considering a
VCXO at 1GHz as well, it would either be locked to 100 MHz or 10 Mhz.
Haven't decided yet, also considering multiplying up to 1000 and then
On 6/27/2013 9:09 PM, KD0GLS wrote:
/The PT5101 was the 5-volt version. I think there is (or used to be) a 3-amp
series as well, but I don't recall the part number. Maybe with a little
digging on the TI website you can find a suitable replacement that will meet
your needs. Last time I
How about using the 10811 from your broken Z3801A?
Adrian
Jim Sanford schrieb:
Bob:
Thanks.
You correctly anticipated that I will use this to lock a 100 MHz
Oscillator, and either multiply or lock from there. (I'm considering
a VCXO at 1GHz as well, it would either be locked to 100 MHz or
Hi
Ok, so the 100 MHz cleanup oscillator hopefully will be about -130 dbc / Hz or
better at 100 Hz offset. That would mean a -150 dbc / Hz OCXO is roughly a
tradeoff at 100 Hz. At 1KHz your cleanup oscillator should be around -150 to
-160. That would put the 10 MHz at -170 to -180 to be in the
folkert folkert at vanheusden.com
Fri Jun 28 05:28:44 EDT 2013
It must be a system 5 watt, so probably an ARM system. It will only
run ntpd so not much ram is required.
It will have 10 (ntp-)clients so a very powerfull processor is not
required.
While not exactly matching your original request
OK, good specs.The The Raspberry Pi should work. They cost about $40
each.
The Atom is about $100 and has just over your 5 watt limit but is very much
easier to set up, becuase it is just a standard PC and can run a normal
version of Linux or BSD Unix.
I'd go with a Pi for NTP but if you
Hi Charles,
My Z3805A are usually in the 1-4us range.
I was pleasantly surprised to see the nanoseconds!
I must ask, do you have the later Z3805A with the MTI oscillator?
Alll mine have the older 10811 Double oven.
-marki
-Original Message-
From: time-nuts-boun...@febo.com
From: Paul
While not exactly matching your original request I'd get a Laureline
from Partially Stapled, a level shifter from any number of places, a
power supply, a case and the misc. bits of glue hardware you'd need.
Sadly I have no idea when the new Laurelines will be available and
what the
Tbolts been good for my uses. Nice and simple no muss or fuss.
I think I paid $139.
Regards
Paul.
On Fri, Jun 28, 2013 at 11:45 AM, Bob Camp li...@rtty.us wrote:
Hi
Ok, so the 100 MHz cleanup oscillator hopefully will be about -130 dbc /
Hz or better at 100 Hz offset. That would mean a -150
David J Taylor
Fri Jun 28 12:56:57 EDT 2013
I would have got one of those, except that it (as I understand it) doesn't
support any of the NTP management functions such as ntpq -p or ntpq -c rv
I was being a bit lazy. It doesn't run NTP. It emits NTP compatible
timestamps in response to
Charles, rather silly typo on my behalf, without doing the proper research, of
course I meant the Symetricom version.
These 5 Z3805A have been running just over 6 weeks. I must have been extremely
lucky to strike a batch of good 10811's then.
The Z3815A has gone back up to 100ns PHU now shrug
Wrote: Consider using a LT1083 7.5 Amp regulator.
Well it is $14 each. The LM 1084 5 Amp 1s $2.43 each
Hefty premium for an extra 2.5 Amps.
If one needs greater than 5 amps, the LM 1084 data
sheet shows how to easily parallel 2 or 3.
What’s in your wallet? G
Regards,
Perrier
If you are in the US (maybe elsewhere) you can request two free samples.
Regards,
Brian
On 6/29/2013 04:12, Perry Sandeen wrote:
Wrote: Consider using a LT1083 7.5 Amp regulator.
Well it is $14 each. The LM 1084 5 Amp 1s $2.43 each
Hefty premium for an extra 2.5 Amps.
If one needs
On Jun 26, 2013, at 10:13 PM, John Miles j...@miles.io wrote:
Here are some short demo videos that we used in our webinar recently
(http://www.symmetricom.com/resources/downloads/webcasts/#Government%20Solut
ions ). They're focused on the Symmetricom 3120A test set (née TimePod
5330A) but
Le 29 juin 2013 à 06:12, Perry Sandeen a écrit :
Wrote: Consider using a LT1083 7.5 Amp regulator.
Well it is $14 each. The LM 1084 5 Amp 1s $2.43 each
Hefty premium for an extra 2.5 Amps.
If one needs greater than 5 amps, the LM 1084 data
sheet shows how to easily parallel
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