Hi Andrew,
> From its creator's forum posts, it appears to be a high slew rate
It's not a high slew rate, it's a short risetime. There are better technologies
if you are after high slewrate. Avalanche BJT pulser, for once.
> comparator,
It's not a comparator anymore, it's a laser diode driver
>From its creator's forum posts, it appears to be a high slew rate
comparator, that once "triggered" will pass the next pulse of an
asynchronous 10 MHz square wave clock (2.5 ppm).
The first version used a micro for setting the threshold voltage. The
micro was removed in the following generation.
In our activities in radio astronomy, the need for precise time calibrationwe
use fast gates like HMC672LC3C from Hittite.
(Has perhaps been superseeded by newer devices)
My 5 cents
Ulf Kylenfall - SM6GXV
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ts Mail List" ,
> "HP Aglient Reflector"
> Subject: Re: [time-nuts] Fast Rise/Fall Time Pulser
>
> The Leo Bodnar pulser output level is adjustable but at outputs higher
> than some 1 v P-P the rise/fall times increase. I reported the ~0.95 v
> P-P as what was rep
The Leo Bodnar pulser output level is adjustable but at outputs higher
than some 1 v P-P the rise/fall times increase. I reported the ~0.95 v
P-P as what was reported on the datasheet for *my* pulser.
Ok, per Leo's August 7, 2017 post, the output device is a Maxim MAX3949.
Mine is marked, "AJK
Am 10.10.2017 um 22:25 schrieb Magnus Danielson:
This one, if you read what is written there:
http://www.analog.com/en/products/linear-products/comparators/adcmp572.html#product-overview
I have used a ADCMP580 comparator on a home etched board
with semi rigid for the outputs. This is wha
This one, if you read what is written there:
http://www.analog.com/en/products/linear-products/comparators/adcmp572.html#product-overview
Cheers,
Magnus
On 10/10/2017 10:20 PM, Bruce Griffiths wrote:
It appears to be merely an ECL comparator;
https://www.eevblog.com/forum/projects/yet-another-
It appears to be merely an ECL comparator;
https://www.eevblog.com/forum/projects/yet-another-fast-edge-pulse-generator/
Bruce
> On 11 October 2017 at 09:14 Magnus Danielson
> wrote:
>
>
> Hi,
>
> On 10/10/2017 09:42 PM, Brooke Clarke wrote:
> > Hi Larry:
> >
> > How does it work.
> > When I
I built one, and later saw a simpler one. Very fast, very simple. I think my
total cost was a few cents.
Google TDR DIY pulser. One from an old magazine (Jim Williams) looks pretty
good, using collector breakdown of a 2N2369. The one I made used one IC and a
few resistors.
Bob
On Tue
I looked at the picture and I can see now that the sma is the pulse and the
BNC is the output trigger. Pretty interesting for the cost.
I then did a search on google for fast pulse generation and a analog
devices solution came up that delivers 50ps and actually shorter. I doubt
its one and the same
Hi,
On 10/10/2017 09:42 PM, Brooke Clarke wrote:
Hi Larry:
How does it work.
When I was working with microwave semis it was either a tunnel diode or
a Step Recovery Diode.
Looking at the pictures, it seems like the surface mounted chip marked
AJK AAA is the driver-chip that connects throu
I expected it to be a variant of the Jim Williams avalanche pulse
generator, but one of the photos shows a part marked AJK AAA that appears
to be the active component.
http://www.leobodnar.com/files/40ps-pulser-RevG.jpg
On Tue, Oct 10, 2017 at 8:42 PM, Brooke Clarke wrote:
> Hi Larry:
>
> How
Hi Larry:
How does it work.
When I was working with microwave semis it was either a tunnel diode or a Step
Recovery Diode.
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
Original Message
There has been discussion recently a
There has been discussion recently about generating fast rise/fall time
pulses by various means. Here is a link to a Leo Bodnar device that will
provide <40 ps rise/fall time, 50% duty cycle, 10 MHz pulses:
http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=124&products_id=295
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