For sale bare boards for Delta Pulse/Sniffer XR-71

[kt315]

nice

[tissaweera]

Delta Pulse Legend + Rev 3.1
When I change brands of NE 556 I got different frequency s .

[tissaweera]

[kt315]

perfecto Tissa looking all right. a time to solder the pots by wire and connect it to EARTH point.
the electrostatic field influence protection. or we say sometimes 'a shield' or 'to shield'.

[kt315]

I got different frequency
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what IC you did set? list?

[tissaweera]

I got different frequency
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what IC you did set? list?

I used this IC . Then I got 165.4 Hz to 192.1 Hz.

[tissaweera]

After that I used this IC . I got 82.6 to 95.9 Hz . I changed R 4 to 10 K and C 3 to 22 n . My pulse width also shown here .

[tissaweera]

I changed R 1 to 560 K then I got 100 Hz . My pulse width is also increased after that
So far I used to test my DP with a 12 inches small coil made from 2 turn CAT 5 cable
and for R 5 Russian made 2.2 K wire wound pot and turn it to maximum detection distance .
But Gold detection is still little bit poor.

[kt315]

After that I used this IC . I got 82.6 to 95.9 Hz . I changed R 4 to 10 K and C 3 to 22 n . My pulse width also shown here .
[ATTACH]53560[/ATTACH][ATTACH]53561[/ATTACH][ATTACH]53562[/ATTACH]

invalid attachments. unaccessable. reload pics.

[kt315]

I changed R 1 to 560 K then I got 100 Hz . My pulse width is also increased after that . [ATTACH]53563[/ATTACH]

o-scope does not give accuracy, you have to use chinese transistor tester or chinese kit generator.
i told about them in especial done thread CHINESE TOYS, with links and pics.

[tissaweera]

o-scope does not give accuracy, you have to use chinese transistor tester or chinese kit generator.
i told about them in especial done thread CHINESE TOYS, with links and pics.

Thank you very much Anatloy .

[kt315]

8 pcs left.

[kt315]

i ordered your delta pulse PCB, I want to know 45cm round coil and 1meter square coils' turns and coil gauge [ SWG] please sent me these details and how to set delay for gold, also need i change damping resistor for 1 meter big coil, your answer is yes, what are the value damping resistor for 45cm and 1 meter coil. i am a geotech member. Thank you Sir kt 315
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thank you.

look a table. take the data from it. some people in Russia wrote that 500-550uH for DP is good. try do both - 350-370 and 550uH coils, then check and compare.
experiment with both. find optimal for you.
you do not need to change damping resistor value. original sch has damping value 2.2kOhm. yes, so big, open first sch and you will see.
you have to do 'as-is' at first, go out with detector in fields, _understand_ how DP works
and then to make changes, after one-two month of dense hunting with digging allday. i do not suggest you to change something in the sch for first time.
DP is not a learning platform like HH.

pleasure

[6666]

Hello KT315, could I buy one pcb and one archive DVD thanks.
Do you still have my paypal email ?, if you do can you send me the request with final amount with the fee?
I dont need the diode.
cheers 6666

[kt315]

hello 6666
14 euro for board. 2 euro for DVD's. sorry, i do not keep all paypal addresses, repeat pls your again.
thank you.
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just reminder for all. i will stop selling on December because 'bad Santa days'.