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Offline Eugene52Topic starter
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« Reply #80 on: November 09, 2009, 02:09:54 pm »
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Here is my parts list for Delta Pulse .
Only resistors R23,24,25,26 must be 1% precision or even better use 0.1% for these 4 resistors only , if you have them available .
Here is my parts list in a text document for easy download.
HH.........Eugene


Next questions will be answered soon about single sided PCB circuit board , coil data , part substitutions , battery types , u.a. panel meter .

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Delta Pulse pats list updated 11-08-09.txt


« Last Edit: December 31, 1969, 06:00:00 pm by Eugene52 »
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Offline hesamavr
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« Reply #81 on: November 09, 2009, 02:23:56 pm »
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Quote:Posted by Eugene52
Here is my parts list for Delta Pulse .
Only resistors R23,24,25,26 must be 1% precision or even better use 0.1% for these 4 resistors only , if you have them available .
Here is my parts list in a text document for easy download.
HH.........Eugene


Dear Eugene
Thanks for your helps.
I want to choose all resistors with 1% precision and for those specific resistors with 0.1% precision. also I want to choose nF and pF range capacitors Polyester or Multilayer and other ones with high quality. I believe that it will increase the sensitivity and stability of circuit. what's your idea ?
Thanks a lot, Hesam

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Offline Eugene52Topic starter
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« Reply #82 on: November 09, 2009, 10:38:25 pm »
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Quote:Posted by hesamavr
Dear Eugene
Thanks for your helps.
I want to choose all resistors with 1% precision and for those specific resistors with 0.1% precision. also I want to choose nF and pF range capacitors Polyester or Multilayer and other ones with high quality. I believe that it will increase the sensitivity and stability of circuit. what's your idea ?
Thanks a lot, Hesam


Hello again . Your ideas are correct  . Use polyester film capacitors @100 volt rating and 5% tolerance . Then use 1/4 watt metal film resistors and 1% tolerance . Like the 2 photos below .
HH.............Eugene

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1% tolerance metal film 0.25 watt.jpg
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Offline apocalypto
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« Reply #83 on: November 10, 2009, 01:16:51 am »
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Very nice work Eugen  Clapp, We waiting for the rest of work

hi....... Apocalypto.

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« Reply #84 on: November 10, 2009, 07:48:14 am »
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hello
i am using in my Delta 2N3904 not 2N3094 and 2N3906 not 2N3096 best result with 2sc1815(npn) and 2sa1015(pnp) see the order of pins EBC  Smiley

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Offline Eugene52Topic starter
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« Reply #85 on: November 10, 2009, 11:25:28 am »
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Quote:Posted by raya
hello
i am using in my Delta 2N3904 not 2N3094 and 2N3906 not 2N3096 best result with 2sc1815(npn) and 2sa1015(pnp) see the order of pins EBC  Smiley


Another good choice !!! The Delta Pulse works the best with the "BC" or "2S" type tansistors , the 2N3904 and 2N3906 do not work good in this circuit . Last night I tried to load the PCB files and had some problems . My computer and internet are fast but this Forum has been very slow the last few days it takes over 10 seconds to load a page and I can not attach files , this is the first time in almost a year it has done that . I think it is the forum server , I pm-d the administrator "Chistian" . Anyway back to the topic :
Here are the two correct single sided PCB file attachments . I corrected the trace of the diode error on the image. As you can see the 6 potentiometers are PCB mounted and their resistances are labeled . Remember , always verify parts placement with the schematic [version 6] I just posted a few days ago .
HH.........Eugene
Quote:Posted by apocalypto
Very nice work Eugen  Clapp, We waiting for the rest of work

hi....... Apocalypto.


Hello Apocalypto . Sorry it took me a few extra days longer to answer you , but this forum has some technical problems that keep me from uploading files and attachments .
Eugene
  Great
I guess the Forum wants me to answer all questions and put all attachments and information on one post to get everyone confused !! Instead of a logical and easy "Step by Step" , one at a time process . And to max out the 1 megabyte file limit per post !!!  Club  Idea Idiot
The original search coil for the Delta Pulse was a 1.1 by 1.1 meter coil it had 16 turns of wire . The next size was a 60 cm round coil - around 25 turns of 0.5 mm wire . And last a 42 cm coil with 29 turns of 0.5 mm wire which measures 3.4 to 3.9 ohms dc resistance . Always Remember to measure and keep the coils DC resistance 3 to 4 ohms or greater if possible or else you will burn out T1 IRF740 or IRF840 . You can add a small resistor in series with the coil but if you want to change different coils in the field you may have to take out the little resistor . It is easier just to wind each size search coil to the proper specs and do not mess around with the little series resistor .
HH................Eugene


Everything you need is here NOW ,  to perfectly complete the Delta Pulse  !!!!! I am now working on something else !!!!
Best Regards to Everyone..........Eugene

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Offline apocalypto
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« Reply #86 on: November 12, 2009, 12:34:28 am »
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Hi Eugen,

I have some remarks :

- I can see C30 (4700uF), C31 (4700uF), C32 (4700uF) and ST TH1210D in the pcb (with components) that you attached last night.

I can see SB2 [Auto / Manual] in the pcb (with components) that you attached last night  (Look to attachement).

- In the shematic that you post a few days ago there are R50=10 k and R51= 1R and i can see him in the pcb (with components) that you post last night.

Please to verify Eugen
thank you for your help.
Eugen, please to correct the PCB and to post a complete project, take the time that you should, but we need a complete and correct documentation
HH..........Apocalypto

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« Reply #87 on: November 19, 2009, 04:31:42 am »
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Just a question to anyone who knows, regarding the taper of the pots, are they linear or log.  (I assume linear) Thanks.

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« Reply #88 on: November 19, 2009, 05:51:54 am »
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Quote:Posted by xeronium
Just a question to anyone who knows, regarding the taper of the pots, are they linear or log.  (I assume linear) Thanks.


They SHOULD be linear, but if you cannot get linear? Log would have to do.  Shocked

It depends how desperate you are!

goldigger

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Offline ali4257
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« Reply #89 on: November 20, 2009, 09:47:48 am »
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which make pcb very well Huh? 

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 iam not full speak english

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