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Offline Eugene52Topic starter
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« Reply #300 on: April 01, 2010, 01:15:40 pm »
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Quote:Posted by steaua581
Thanx Eugene,
I think i have it at 100 PPS..... I am using this soft for first time im having trouble setting it right.Can you please point to me what im doing wrong?

Regards
Marius


Hello . Try to show us a copy or page image of the Delta pulse circuit components and the values you are simulating and we can tell you whats wrong . I will check back later today .
Regards...........Eugene

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Offline steaua581
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« Reply #301 on: April 01, 2010, 01:50:48 pm »
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Thanx Eugene,
I have atached a pic with the values im getting and where i"m measuring.

Regards
Marius

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Offline Eugene52Topic starter
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« Reply #302 on: April 01, 2010, 04:09:35 pm »
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Excellent work so far steaua !!! Have you checked the attachment I posted here ?

It seems you have may have component values wrong ?

Regads.......Eugene

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Offline steaua581
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« Reply #303 on: April 03, 2010, 08:42:11 am »
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Hello Eugene and forum,
I have checked all based on schematic did all on osciloscope but same problem.With a 25 cm coil 32 turns  im detecting at about the same distance as i am using the 40 cm with 23 turns 0,5 wire.

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Marius

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Offline Eugene52Topic starter
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« Reply #304 on: April 03, 2010, 10:31:59 am »
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Quote:Posted by steaua581
Hello Eugene and forum,
I have checked all based on schematic did all on osciloscope but same problem.With a 25 cm coil 32 turns  im detecting at about the same distance as i am using the 40 cm with 23 turns 0,5 wire.

Regards
Marius


Hello . Make sure all resistors and capacitors you used are within the proper values . Another thing to check are the transistors , did you use the BC series or the 2N series ? Is your damping resistor 680 ohms ? And finally make sure all your timings at the test points are set properly !! See the chart here:

Regards...........Eugene

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Offline steaua581
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« Reply #305 on: April 03, 2010, 11:44:56 am »
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Hello Eugene and Forum,
I have used BC transistors and i have the Resistor 680 ohms. But i guess i found somehow what the problem is on TR 2 i should have  TX at 80 uS. I had 10 mS wich was wrong. My question is if i will get about 100 uS instead 80 uS will be allright?

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Offline Eugene52Topic starter
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« Reply #306 on: April 03, 2010, 12:04:02 pm »
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Quote:Posted by steaua581
Hello Eugene and Forum,
I have used BC transistors and i have the Resistor 680 ohms. But i guess i found somehow what the problem is on TR 2 i should have  TX at 80 uS. I had 10 mS wich was wrong. My question is if i will get about 100 uS instead 80 uS will be allright?

Regards
Marius


Remember the 10 ms of time between tx pulses is correct in europe which is your 100 hz frequency !!
HH.......Eugene


Here is second timing example from Technician Geo . And also TO92 BC 557 EBC configuration sheet .

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« Reply #307 on: April 03, 2010, 09:49:13 pm »
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Hello Eugene and forum!!!
May I ask what is the best PI MD for gold nuggets and coins, is it the DP/sniffer 71, Hammerhead or the underwater PI? Thanks for your help and advice.


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« Reply #308 on: April 04, 2010, 04:06:57 pm »
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hi i use 28cm coil 38turns 3 Ohms it can detect 1 eiro at 20cm beer can 55cm but it unstable and its beeping some time after i put away metal were i need search problem pls help

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« Reply #309 on: April 04, 2010, 06:50:04 pm »
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all you have to do is adjust sense setting below the maximum setting. readjust again by decreasing the setting if the sound comes back. readjust till the sound totally disappear.

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