Author Topic: Yet another fast edge pulse generator  (Read 43467 times)

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Offline Leo Bodnar

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Re: Yet another fast edge pulse generator
« Reply #25 on: July 14, 2017, 12:50:24 am »
I think I have the design ready.  I am very happy with its performance and form-factor.  I might continue tweaking it a little bit but it's necessary to declare any project ready to ship at some point.  So it is.

Here is the list of features it has ended up with.

  • Fixed 10MHz pulse train with fast rise and fall times.
  • Rise time and fall time around 50ps
  • Variable amplitude between 100mVpp and 1Vpp (via USB .)  AC coupled.
  • Trigger output ~1.5Vpp amplitude into 50R load.  AC (default) or DC (solder jumper) coupled
  • BNC jack for direct connection to oscilloscope input
  • USB powered. Power requirement is 200mA at 5V.  Can be powered from a USB charger.

I have about a dozen PCBs and can supply them starting from next week at £50 plus shipping for a fully assembled, tested and ready to go unit.  This will barely cover my design costs and if this becomes a commercial product will probably be revised (up or down.)
As a bonus I will print out individual rise/fall time screenshots for each unit on my CSA 803A + SD-26 test setup for this run and supply them with the device.

It would be helpful if you indicate your interest by posting here so that I know how many units to assemble.

Thanks
Leo

P.S. I hope this is not considered heavily commercial for this forum.  If you think it is please let me know.
« Last Edit: July 14, 2017, 01:01:39 am by Leo Bodnar »
 
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Offline lukier

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Re: Yet another fast edge pulse generator
« Reply #26 on: July 14, 2017, 12:58:20 am »
I have about a dozen PCBs and can supply them starting from next week at £50 plus shipping.  This will barely cover my design costs and if this becomes a commercial product will probably be revised (up or down.)
It would be helpful if you indicate your interest by posting here so that I know how many units to assemble.

I would be interested, but please clarify, £50 for the PCB, PCB + parts or assembled kit?
 

Offline Leo Bodnar

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Re: Yet another fast edge pulse generator
« Reply #27 on: July 14, 2017, 01:02:31 am »
I would be interested, but please clarify, £50 for the PCB, PCB + parts or assembled kit?
Fully assembled, tested and ready to go unit.
Thanks
Leo

Offline lukier

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Re: Yet another fast edge pulse generator
« Reply #28 on: July 14, 2017, 01:04:44 am »
Then count me in :)
 

Offline rx8pilot

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Re: Yet another fast edge pulse generator
« Reply #29 on: July 14, 2017, 02:27:42 am »
I would be interested, but please clarify, £50 for the PCB, PCB + parts or assembled kit?
Fully assembled, tested and ready to go unit.
Thanks
Leo

Totally. Want. One.  :-+ :-+
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Offline H.O

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Re: Yet another fast edge pulse generator
« Reply #30 on: July 14, 2017, 02:54:50 am »
Definitely, I'd take one if I may, thank you!
 

Offline chriswebb

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Re: Yet another fast edge pulse generator
« Reply #31 on: July 14, 2017, 03:10:19 am »
I too would be interested in this device.
Always learning. The greatest part of life is that there will always be more to learn.
 

Offline JPortici

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Re: Yet another fast edge pulse generator
« Reply #32 on: July 14, 2017, 04:06:22 am »
I want one too! :D
 

Offline richnormand

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Re: Yet another fast edge pulse generator
« Reply #33 on: July 14, 2017, 04:26:52 am »
Put me down for one also.
Cheers and thanks.
 

Offline tecman

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Re: Yet another fast edge pulse generator
« Reply #34 on: July 14, 2017, 04:58:32 am »
I'm good for one as well

paul
 

Offline steverino

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Re: Yet another fast edge pulse generator
« Reply #35 on: July 14, 2017, 05:01:52 am »
+1 please and thank you
 

Offline Leo Bodnar

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Re: Yet another fast edge pulse generator
« Reply #36 on: July 14, 2017, 05:07:18 am »
Thank you, gentlemen.  I'm on it.

Offline JPortici

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Re: Yet another fast edge pulse generator
« Reply #37 on: July 14, 2017, 06:06:18 am »
let us know if you put up a preorder/page list :-+

i WANT one when they'll be ready, but would you consider in the future a new version, powered by let's say 2 coin cells? instead of having to connect a usb cable...

where did you get your pcb made? i like them very much, simillar to the boards from one of our assemply houses (they're quite expensive to set up though, for hobby projects)
« Last Edit: July 14, 2017, 06:12:06 am by JPortici »
 

Offline tatus1969

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Re: Yet another fast edge pulse generator
« Reply #38 on: July 14, 2017, 07:28:54 am »
Great job!

If your batch isn't sold out, I would also love to buy one.
We Are The Watt - Resistance Is Futile!
 

Offline Leo Bodnar

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Re: Yet another fast edge pulse generator
« Reply #39 on: July 14, 2017, 07:42:55 am »
I will try to accommodate everyone :)  Thanks, guys.

Offline orin

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Re: Yet another fast edge pulse generator
« Reply #40 on: July 14, 2017, 07:52:38 am »
Add me to the list too please.
 

Offline electrolust

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Re: Yet another fast edge pulse generator
« Reply #41 on: July 14, 2017, 11:03:33 am »
One for me, if you can ship to US.  I'm happy to take a single US shipment as remail them to final destination.
 
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Offline marshallh

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Re: Yet another fast edge pulse generator
« Reply #42 on: July 14, 2017, 12:25:11 pm »
You can set up a public Google Docs spreadsheet and link it, people can add their names to the list. Worked well for me, no need to trawl through posts to see who wanted one  :-+
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Offline all_repair

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Re: Yet another fast edge pulse generator
« Reply #43 on: July 14, 2017, 02:03:25 pm »
May I order one.  Thank you.
 

Offline Berni

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Re: Yet another fast edge pulse generator
« Reply #44 on: July 14, 2017, 03:18:15 pm »
I would like to buy one too
 

Offline ivaylo

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Re: Yet another fast edge pulse generator
« Reply #45 on: July 14, 2017, 03:39:56 pm »
one more please...
 

Offline Leo Bodnar

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Re: Yet another fast edge pulse generator
« Reply #46 on: July 14, 2017, 05:31:48 pm »
Thanks, all.  The purpose of having people expressing interest is so that I can estimate suitable batch size and purchase components in correct quantities. This has worked great so far, I see that I need to run another batch of PCBs early next week.

Thank for your offer electrolust, I can ship with FedEx or Airmail around the world from our small office so this is not a problem.  We get good rates.

Offline capt bullshot

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Re: Yet another fast edge pulse generator
« Reply #47 on: July 14, 2017, 08:41:16 pm »
Count one in for me too ...
Safety devices hinder evolution
 

Offline Andie

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Re: Yet another fast edge pulse generator
« Reply #48 on: July 14, 2017, 09:29:54 pm »
Leo,

awesome! I would like to buy one, too!

Regards,
Andreas
 

Offline The Electrician

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Re: Yet another fast edge pulse generator
« Reply #49 on: July 15, 2017, 01:34:38 am »
Put me on the list.  Another great forum project showing up on a great forum.
« Last Edit: July 15, 2017, 01:36:36 am by The Electrician »
 


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