Author Topic: EEVblog #306 - Jim Williams Pulse Generator  (Read 233703 times)

0 Members and 1 Guest are viewing this topic.

Offline komet

  • Supporter
  • ****
  • Posts: 155
  • Country: ch
  • Shenzhen Retroencabulator Mfg. Co.
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #200 on: January 19, 2013, 08:37:42 pm »
I should like to get a calibrated kit as well, please.
 

Offline plesa

  • Frequent Contributor
  • **
  • Posts: 965
  • Country: se
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #201 on: January 19, 2013, 09:35:57 pm »
One kit and one bare PCB for me ( I send also PM  )
The ITAR code can be 8543200000
Thanks
 

Offline olegjay

  • Newbie
  • Posts: 3
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #202 on: January 20, 2013, 09:45:59 pm »
Hi free_electron; Please finalize me for "2 calibrated" and "2 bare boards".  (You had me for 1 kit on your Jan 11 posting and you didn't have me at all on your Jan 19 posting.)
That would be a total of 2x$22 + 2x$5 + 2x$2 + $2(credit card to paypal) + $5.35 = $65.35. Is this the price directly or through ebay?
 

Offline grenert

  • Frequent Contributor
  • **
  • Posts: 446
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #203 on: January 20, 2013, 10:03:22 pm »
Wow, thanks for making this available again!  The calibration option alone is worth the price of the whole thing, I think.
Please put me down for one calibrated kit and one bare PCB.
 

Offline casinada

  • Frequent Contributor
  • **
  • Posts: 596
  • Country: us
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #204 on: January 22, 2013, 06:46:47 am »
Free_Electron,
Can you change mine from Kit to Calibrated?.
Thank you
Daniel (casinada)
 

Offline nadona

  • Regular Contributor
  • *
  • Posts: 205
  • Country: us
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #205 on: January 24, 2013, 03:37:02 am »
I like mine calibrated. Thank you very much.
Ha-ha-ha. That's good, too!
 

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 7218
  • Country: us
    • SiliconValleyGarage
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #206 on: January 24, 2013, 03:16:26 pm »
Keep posting. I'll update the table over the weekend. I placed the order yesterday for the parts from digikey. That put a dent in my creditcard :). I should have parts friday. Pcb's will be ordered saturday. I changed the switch so it sticks through the front panel. Since i have never used that particular switch i hold off sending the board for fab.. I have an'unbreakable' rule : if using a part footprint for the first time i need the physical part in hand....

I have the transistors already and will test them for avalanching this weekend. Pcbs should be in around feb 4. After which kits will start leaving.
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline Circuitous

  • Supporter
  • ****
  • Posts: 236
  • Country: us
    • Corgi-Tronics
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #207 on: January 24, 2013, 03:39:37 pm »
Sign me up for a calibrated one!

Sent from my SPH-D710 using Tapatalk 2


Offline Scuba

  • Newbie
  • Posts: 2
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #208 on: January 24, 2013, 04:21:37 pm »
That put a dent in my creditcard :).

Well, then please let us know your Paypal account ;) . (PM?)
 

Offline biot

  • Regular Contributor
  • *
  • Posts: 67
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #209 on: January 24, 2013, 06:45:51 pm »
Keep posting. I'll update the table over the weekend.

I tried to IM you, but I think it may have mailed instead. In any case, please sign me up for a calibrated version with international shipping.

Thanks!
 

Offline BravoV

  • Super Contributor
  • ***
  • Posts: 6079
  • Country: 00
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #210 on: January 25, 2013, 01:40:35 am »
Pcbs should be in around feb 4. After which kits will start leaving.
Vincent,
I'm sitting nicely here waiting for you to get prepared, please announce the procedure in details like paypal payment, payment confirmation and shipping address details, so you wont get overwhelmed by it. Also I mentioned earlier, I will paypal you directly bypassing ebay once you're ready.

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 7218
  • Country: us
    • SiliconValleyGarage
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #211 on: January 25, 2013, 05:28:02 am »
don't worry about payments yet guys. i need to set up a few things so this does not end up being a logistics mess.
Wait until after the weekend. my credit card can take larger 'dents' than that :)
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 7218
  • Country: us
    • SiliconValleyGarage
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #212 on: January 27, 2013, 10:29:00 pm »
Jim Williams PulseGenerator MK-II

Top view



Bottom View


i rearranged the components to have as large a ground mass a possible for the waveguide.
I 'stole' the idea from this topic :

https://www.eevblog.com/forum/projects/transmission-line-avalanche-pulse-generator/msg185694/#msg185694

The waveguide is 750 degrees long and 50 ohms. 25 mil track in an 8 mil gap

You can either use it or not. By installing the 1 meg resistor on top you use the 'MK-I style.
By installing R1A on the bottom and closing the solderbridge next to the transistors hull you use MK-II style

Boards will be ordered tomorrow at ITeadStudio.
« Last Edit: January 27, 2013, 10:32:59 pm by free_electron »
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline EV

  • Frequent Contributor
  • **
  • Posts: 479
  • Country: fi
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #213 on: January 27, 2013, 10:54:02 pm »
Jim Williams PulseGenerator MK-II

You can either use it or not. By installing the 1 meg resistor on top you use the 'MK-I style.
By installing R1A on the bottom and closing the solderbridge next to the transistors hull you use MK-II style

I have ordered 2 pcs calibrated. Can you make one with MK-I style and the other with MK-II style? Thanks!
 

Offline AlfBaz

  • Super Contributor
  • ***
  • Posts: 2007
  • Country: au
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #214 on: January 28, 2013, 12:32:29 am »
I presume they will all be MKII. You choose if you want to use the built in delay line (MKII) or not (MKI).
Thank you free_electron for the mod and thank you Jay_Diddy_B for the idea
 

Offline nadona

  • Regular Contributor
  • *
  • Posts: 205
  • Country: us
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #215 on: January 29, 2013, 06:45:26 am »

First Class Design as I expected! ;D

Jim Williams PulseGenerator MK-II

Top view



Bottom View


i rearranged the components to have as large a ground mass a possible for the waveguide.
I 'stole' the idea from this topic :

https://www.eevblog.com/forum/projects/transmission-line-avalanche-pulse-generator/msg185694/#msg185694

The waveguide is 750 degrees long and 50 ohms. 25 mil track in an 8 mil gap

You can either use it or not. By installing the 1 meg resistor on top you use the 'MK-I style.
By installing R1A on the bottom and closing the solderbridge next to the transistors hull you use MK-II style

Boards will be ordered tomorrow at ITeadStudio.
Ha-ha-ha. That's good, too!
 

Offline fmaimon

  • Supporter
  • ****
  • Posts: 165
  • Country: br
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #216 on: February 08, 2013, 09:43:48 pm »
Vincent,

What's your paypal, so we can send the payment for the kits?
 

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 7218
  • Country: us
    • SiliconValleyGarage
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #217 on: February 13, 2013, 09:44:45 pm »
they just arrived !

guess i'll be building over the weekend :)
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline sdscotto

  • Contributor
  • Posts: 43
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #218 on: February 14, 2013, 12:56:51 am »
Great!   Is this designed for any available case?
 

Offline Orpheus

  • Regular Contributor
  • *
  • Posts: 120
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #219 on: February 14, 2013, 03:24:56 am »
Is it too soon to get in line for any uncalibrated leftovers?
 

Offline G7PSK

  • Super Contributor
  • ***
  • Posts: 3642
  • Country: gb
  • It is hot until proved not.
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #220 on: February 14, 2013, 11:35:42 am »
How are you going to notify us of your paypal address PM or published on here.
 

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 7218
  • Country: us
    • SiliconValleyGarage
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #221 on: February 14, 2013, 02:13:56 pm »
Yep, this is specifically designed for a particular case using the 3d STEP model of that case.
I have spare kits, no problem.

For payment:

Payment is through paypal. My paypal accou t is my email address ( found in my profile )
In the comment section clearly state:

The shipping address includong the country
What you need

For example 1xkit , 2xcal, 1x board.

To make it clear

KIT. Means all parts,pcb and case.
CAL means a KIT that is semi-built and has a been measured on a high performance scope. A scope plot with rise time will be provided. The cal fee is donated to Dave's Sagan fund.
PCB means the bare board.

Add the costs up and add the shipping fee.
I have posted the numbers before.

Each kit comes with a spare transistor. These are gold legged hi end transistors , not the cheapo tin plated ones.
I will start building this weekend . People who buy just the kit will be serviced first . Cal'd kits will probably start leaving around the 25th of february as i need to arrange the hi end scope.
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline marshallh

  • Supporter
  • ****
  • Posts: 1462
  • Country: us
    • retroactive
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #222 on: February 14, 2013, 03:07:50 pm »
Love to send you money but this forum doesn't show your email address  :-/O
Verilog tips
BGA soldering intro

11:37 <@ktemkin> c4757p: marshall has transcended communications media
11:37 <@ktemkin> He speaks protocols directly.
 

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 7218
  • Country: us
    • SiliconValleyGarage
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #223 on: February 14, 2013, 03:16:53 pm »
Oh darn, you're right.... I always assumed since it showed mine when i clicked on my handle it did that for everyone. Drat.

Hmmm. Don't really want to throw that out in the open.. I'll send people a message through the forum
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline andyturk

  • Frequent Contributor
  • **
  • Posts: 892
  • Country: us
Re: EEVblog #306 - Jim Williams Pulse Generator
« Reply #224 on: February 14, 2013, 03:22:51 pm »
Checking the numbers...

I ordered one 1x CAL. I think that comes to:

1x kit                  $22
CAL                     $5
Shipping (US)      $6
---------------------------
                           $33

Correct?
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf