Delta Pulse

[mikebg]

Hello Mike Bg and forum,
You think instead 80uS arround 100uS on TR 2 will be allright?

Marius, you should adjust it for best results with the target. No need to measure it. But measure the battery current and pay attention of TX transistor temperature.

[raff33]

Hello Mike Bg and forum,
Thanx for your help ..You think instead 80uS arround 100uS on TR 2 will be allright?

Regards
Marius

hi Marius,
you have to change somes composants az tell Eugene...
-R47,R49=2k
-R5=2k2 1w
-R6=1k
-C7=220uf (not 1000 uf)
-C1= 15nf (not 22 nf)
then i think you get best result...............regards raff33

[jack]

Hello kt315 and other friends
I can not find the diode stth1210
Please help me replace this piece
Can I work take 1n4001 or 1n4148 ???
Please help me

[mikebg]

See data:

[jack]

i can not find diode stth1210
please help me for problem

[nick_f]

Hello kt315 and other friends
I can not find the diode stth1210
Please help me replace this piece
Can I work take 1n4001 or 1n4148 ???
Please help me

You can't use 1N4148 because of the high current in circuit. 1N4001 is not good because it is a slow diode, beside it doesn't work over 50V. 1N4007 works up to 1000V, but it is still slow.
You can use for example BYV26C or 1N4937

(BYV26C - 600V 1A Fast Recovery)
(1N4937 - 600V 1A Fast Recovery Diode) -
(MUR480EG - 4A 800V Ultra-Fast Recovery Diode)
(FR605 600V 6A Fast Recovery Diode) - these diodes are available from www.futurlec.com, as well as many other distributors.


Actually, if you go to www.futurlec.com and perform a search using "fast recovery", you will find heaps of suitable diodes, depending on your desired current and peak voltage.

Regards,
Nicolae

[migusch]

Mouser.com has the STTH1210 in stock!
Might not be a problem to get them...

[jack]

hi to all
i need best coil 40cm for DP
i need to number wire and number turn
please help me
G.L
JACK

[kt315]

hi to all
i need best coil 40cm for DP
i need to number wire and number turn
please help me
G.L
JACK

enjoy.

[jack]

TANK YOU KT315
FOR 40CM COIL >>>>>22 TURN NUMBER WIRE 2MM (14SWG)OK?????
DEAR KT315
WHAT BEST WIRE AND TURN FOR LOOP 1*1 FOR???
PLEASE HELP ME
G.L
JACK

[jack]

TANK YOU KT315
FOR 40CM COIL >>>>>22 TURN NUMBER WIRE 2MM (14SWG)OK?????
DEAR KT315
WHAT BEST WIRE AND TURN FOR LOOP 1*1 FOR???
PLEASE HELP ME
I made a delta pulse
but my Delta pulse allergic to camping is a little gold and copper
Please help me to obtain high sensitivity to copper and gold
Good luck

jack

[Qiaozhi]

TANK YOU KT315
FOR 40CM COIL >>>>>22 TURN NUMBER WIRE 2MM (14SWG)OK?????
DEAR KT315
WHAT BEST WIRE AND TURN FOR LOOP 1*1 FOR???
PLEASE HELP ME
I made a delta pulse
but my Delta pulse allergic to camping is a little gold and copper
Please help me to obtain high sensitivity to copper and gold
Good luck

jack

Jack (or should I say, Goldenskull / Mesy64) ?? ... Why do you keep asking the same questions again and again?

[jack]

Goldenskull / Mesy64 ?????
what Goldenskull / Mesy64 dear freind?????
i need to your hlep

[Cyclonite]

I am going to build the Delta Pulse Metal Detector. Only, I am indecisive about which version of the PCB I will use. Both versions, the single-sided and double-sided PCB designs seem to work OK judging by what I have read.

However, although more compact in design, is the double-sided PCB version worth the extra hassle. And I am referring to making a through-hole specimen in which the top and bottom layer are though-hole galvanically interconnected. Well, I am going to have to make this decision on my own, for I have not yet read any posts about layout disadvantages between both PCB versions. I would have to make extra expenses in manufacturing the double-sided version. However, materials obtained (extra expenses) to make a double-sided through-hole PCB version will come in handy for future projects too. So, whatever you decide for yourself, maybe the following links may be of interest to you.

DIY PCB Manufacturing

I would like to add a Link to Mike Harrison's Site, who gives excellent guidelines to those of You who would like to make there own High Quality PCB's for this Project.

How to make really really good homemade PCBs - By Mike Harrison:
http://www.electricstuff.co.uk/pcbs.html

Note: And here You have the plagiarized copy of Mike Harrison's Site by the Indian Electronics Magazine credited to a rip-off artist called Indrani Bose in PDF-format:

How to Make Good Homemade PCB's - By Indrani Bose.pdf:
http://www.efymagonline.com/pdf/Pcbs.pdf

DIY Printed Circuit Board Using Photo Etching Method:
http://www.youritronics.com/diy-prin...tching-method/

DIY Printed Circuit Board (YouTube Video) - High Quality PCB at Home:
http://www.instructables.com/id/DIY-...circuit-board/

How to make PCB's at Home (Links):
http://free-pcb.100webspace.net/how-...cb-in-home.php

Easy Printed Circuit Board Fabrication - Using Laser Printer Toner Transfer:
http://www.fullnet.com/~tomg/gooteepc.htm

Laser printing of PCB's (Links):
http://on.blogdns.org/laser-printing-of-pcb.php

Hacking a Printer to Directly Print PCB's (very comprehensive discussion here):
http://www.cnczone.com/forums/showthread.php?t=30951


Currently, two Through-Hole versions of the PCB's are used, and the double-sided board has given the most problems, as also being the most difficult to manufacture for the Home Brewer. And here You have a few interesting links to DIY Through-Hole PCB manufacturing, that lubricates this matter like a soothing ointment on a sore butt-hole.



Acid Copper Through-Hole Plating:
http://www.thinktink.com/stack/volum...I/copplate.htm

PCB Through-Hole at Home:
http://www.colinmackenzie.net/index....4:pcb&Itemid=6

Through Hole (EDAboard Thread Links):
http://search.edaboard.com/through-hole-via.html

Enjoy!

Robert

[apocalypto]

Please help me

I finish making my delta pulse, it not work

- A Continued sound,if i push or not the RESET button and keep some time.
- No metal detection.

please can you assit me to solve the problem
thank you