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Offline NE555
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« Reply #830 on: May 18, 2018, 04:06:29 am »
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Quote:Posted by Mudflap
To receive the signal at the bottom of the wave you would have to synchronize the detector signal to the power line signal. The detector frequency may drift with temp, etc. This would require the detector to have a high stability oscillator and phase lock loop frequency control. If not synced then you would hear the difference between the 2 which would be off frequency to the detector receiver causing degraded sensitivity. Easiest thing is to just stay away from the power grid frequencies and harmonics.


sure my words Mudflup. or, you would have a special block that will receive the power line signal, running it on a shaper and
transmit on the tx mos-fet. but that is impossible just cause the signal from the coil much more in power than the one from near power line.

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« Reply #831 on: May 20, 2018, 11:15:33 pm »
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Hello. Can anybody send me à free and working link to " Delta Pulse practical guide".
I only found a SCRIBD link askink for credit card numbers, that don't really inspire confidence.
Thank you.  Wink
PS: all infos about DP metal detector tuning are welcome.

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Offline NE555
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« Reply #832 on: May 21, 2018, 03:11:42 am »
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i HAD GAVE you FULL LIST OF FILES

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 open folder pcbs boxes manuals and LOOK THERE.


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« Reply #833 on: May 21, 2018, 11:37:17 pm »
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Thank you NE555 but the file seems empty. I tried with different programs but nothing.
I will ask an help to a friend who is a computer engeener. Wink

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« Reply #834 on: May 22, 2018, 04:26:24 am »
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i was able to download the file but when i try to open and run it
EAGLE give this error

Loading F:/Kt315/DP/Delta_Pulse.SCH ...

Error:

line 1, column 1: Start tag expected.
 Angry


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Offline NE555
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« Reply #835 on: May 22, 2018, 06:49:53 am »
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use P-CAD viewer. i do using P-CAD 2006. my favorite OrCAD refused to work under win7 (bad!).

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« Reply #836 on: May 22, 2018, 05:50:32 pm »
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Quote:Posted by NE555
use P-CAD viewer. i do using P-CAD 2006. my favorite OrCAD refused to work under win7 (bad!).

Thank you.
i use win7,i download pcad2006 but it didnt work.
i will have to look in to it.
thanks again

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« Reply #837 on: June 11, 2018, 06:13:49 am »
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Hi.Are there any document with all test points,dc voltage and oscilloscope values noted?
I have a document with TR2 to TR5.

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« Reply #838 on: June 11, 2018, 06:18:00 am »
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Quote:Posted by nickel_n
Thank you.
i use win7,i download pcad2006 but it didnt work.
i will have to look in to it.
thanks again


delete all files .manifest from P-CAD folder. i use win7 too.

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« Reply #839 on: June 14, 2018, 07:28:03 am »
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To be more specific I would be grateful to know what pulse amplitude there should be
on LF357 pin 2 and 6?
There are pulses at TR2 to TR5.
But there are no reaction when coil are close to a metal.

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