Delta Pulse

[Geo]

What do you think of the two box metal detectors for me?

I think that PI is better. If the object is big (as a basket ball or bigger) and deep and you can't use large coil (ground anomalies) then 2Box detectors are better.

[diminute]

Fast Delay

What's minimun DELAY for Delta Pulse ??????

[1843]

Problem

Hi all,

I made the Delta Pulse but it has some problem and its detection is very poorly:
1.Treshhold pot does not work correctly and DP makes a sound like the police siren! Its sound is not stability.
2.It sends pulse very good and its coil make noising, But it can not detect well.

Help me, please.
Regards

[Geo]

Hi all,

I made the Delta Pulse but it has some problem and its detection is very poorly:
1.Treshhold pot does not work correctly and DP makes a sound like the police siren! Its sound is not stability.
2.It sends pulse very good and its coil make noising, But it can not detect well.

Help me, please.
Regards

Hi 1843. Now i am at Athens so i have not any schematic to help you. After 4..5 days that i come bach at home i will look at my PC to help you. All these days you can check all the test points especially at first stage (LF256 if i remember right) and second stage. If the dc voltage goes up when you put an object near the coil then look at next stage. -E to +E must be 12V (11.4), Gnd to +E 6V and gnd to -E -6V. Good luck

[1843]

Geo

Hi Geo,
I check my DP, gnd to +E is 5.4v and gnd to -E -5.4v.
The sound of it is not clean and is instability, Does it should have a constant low tone when an object is not near the coil?(and threshold pot set it?)
It has problem.Already I did connect the reverse power supply to it at once.I think for that, it's ICs have been damaged:confused:

I am waiting for you,
Best regards.

[ultra]

where is mistake ????

HI all
i bild deltapulse but have a some problems :confused:
1 Theshold is not work (have only high tone):mad:
2 Not detected any metal object ........
The pulse in coil si a over 450 volts
i have pulse in pin6 on on ic4 ..ic5 ic6 and ic7 but nothing ???
I ask where i mistake ?:confused::confused::confused:
and where is integrtor schematic ?:confused:



Thanks

[1843]

Delta Pulse unit

Hi,
here is the Delta Pulse unit:
http://www.kellycodetectors.com/pstar/DeltaPulse.htm
Is it same with our DP circuit?

Regards.

[Geo]

Hi,
here is the Delta Pulse unit:
http://www.kellycodetectors.com/pstar/DeltaPulse.htm
Is it same with our DP circuit?

Regards.

Absolute the same

[Geo]

HI all
i bild deltapulse but have a some problems :confused:
1 Theshold is not work (have only high tone):mad:
2 Not detected any metal object ........
The pulse in coil si a over 450 volts
i have pulse in pin6 on on ic4 ..ic5 ic6 and ic7 but nothing ???
I ask where i mistake ?:confused::confused::confused:
and where is integrtor schematic ?:confused:



Thanks

From who schematics did you constructed the detector??
As i know there are two schematics one from Micron electronics and one pdf file from XR71. both schematics are working and are about the same (very little changes). Ohh maybe there is another from russian people but i think that is the same with the schematic that there is at the forum. Tell me your schematic to see who are ic5.6.7 and to try to solve your problem.

[1843]

Absolute the same

I think that it is not same with our schematic.
It is very powerful! Locates Gold and Other Treasures Over 5 Meters + (20 feet)
My DP can not detect a car over 1.8m in air.(with a 70x70cm coil)
I made the DP form treiti's PCB(Sprint Layout). It is full of errors!

[1843]

Geo

Geo,
If you will be able to locate a car with your 60x60cm coil at 3m,thus our circuit is the same with the factory Delta Pulse.
Regards

[Geo]

I think that it is not same with our schematic.
It is very powerful! Locates Gold and Other Treasures Over 5 Meters + (20 feet)
My DP can not detect a car over 1.8m in air.(with a 70x70cm coil)
I made the DP form treiti's PCB(Sprint Layout). It is full of errors!

Hi .
It is the same. If you read carefully you will see that the 5m are for coil 2x2 m. If i remember right with the 60x60 coil i locate a big object at 2....2.5m. Did you read the manual to regulate your detector right??? How many turns has your coil?
I dont know if treiti's pcb is OK. I have the xr71 pcb.
But i am sure that the original DP is the same with our DP. I show one and it has the xr71 pcb.

[1843]

Geo

Hi,
I read the BANDITO-IMPULSE manual.
My 70x70 coil has 13 turns of 0.7mm wire. What coil-inductance is best for the DP?(between 300-500 uH) For the 70x70 coil how many turns is necessary?
If my DP be able to detect a large object at 3m, it is the best detector for me!
But it doesn't work correctly.

[Geo]

Hi,
I read the BANDITO-IMPULSE manual.
My 70x70 coil has 13 turns of 0.7mm wire. What coil-inductance is best for the DP?(between 300-500 uH) For the 70x70 coil how many turns is necessary?
If my DP be able to detect a large object at 3m, it is the best detector for me!
But it doesn't work correctly.

Try to wind 22...28 turns at your coil. Detector will come very stable and you will work always with full sensitivity . Micron Electronics says that DP with a coil 1x1m can detect on air an object 1m x 1m at 3.5m
10cm x 10cm at 1.3m
25cm x 25cm 1.8m
50cm x 50cm 2.6m

[1843]

Geo

Befor I tried the coil with 21 turns (1500uH), but that induction was too much for a effective PI coil then I taked 8 turns off.
Can I solder additional wire to it?

I changed in my DP:
IRF740 to 840,
R5&R6 to 1k,
U5 to TL072.

If other replaces would be nice, tell me it please.

Regards.