Delta Pulse

[VUJO]

Nice, thx for your speedy reaction .

I allrdy chked it. Found a mistake in PR1 221 instead of 203..i placed now 223, because i have no others here around now. Funny part is, when not on and wait some short time,and switch on.. it works, but after some small time (1 minute)the power consumtion is increased with factor 10. (50Mamp)..Seems there's a bad condensor in the circuit. I'm testing it without irf740..

My English is like yours, but it works for both of us

What is the resistance between the outputs (5 and9) and GND?

[pigeon]

Hi Freedan3d

thank you very much

regards

[Oorlam]

What is the resistance between the outputs (5 and9) and GND?

Cant measure when ic is installed. for some reason its nothing..system is switched off ....between ground/5 nothing and ground/9 variable.. I don't get this..

[szucs_g]

Check if a short circuit between the outputs of 556 and GND.If is gone, replaced with other 556th

I bought 2.1 Ah battery. This is tied to the Dp. Twice he has gone 556 likely due to the initial current is stronger. How could this problem be eliminated?

[Oorlam]

What is the resistance between the outputs (5 and9) and GND?

OK.

Nothing between output 5 and ground, shorten between 9 and ground...replacement needed i think.. If so, thats fast..brandnew component..Is there a know reason why this can b happen or just bad luck?

[Oorlam]

Wel, it's fixed here. The NE556 (556) i got resistance between ground/pin9 and that part was broken down. It was a terminal damage inside the chip, so it started up like normal, and after some short time, it was consuming 10x what it normally does.the result was it was getting hot.
All other parts working fine and give's sound, even with this problem.

The schedule i used is the last PCB version.

I have the update here with the diode for the IRF740 and will wait with using it. The diode i want to use is the CQ652 ultra fast recovery diode (800volt).
Offcourse i share my expierence and will make pics in a later stage.

Now i have to find a decent coil, and not one of 1mtr..around 35/40cm max or smaller when it's verry good working...
I have some coils seeing passing by en also the resistance of a a coil.

Maybe is there somebody that have good expierence of the knowledge to share me his information i need to finish the last stage of creating the DP.

If you B so kind to react on this, i will appreciate it deeply.
I will offcourse, look around on this forum to find the best coil for this MD.

Thx for now!

[VUJO]

Wel, it's fixed here. The NE556 (556) i got resistance between ground/pin9 and that part was broken down. It was a terminal damage inside the chip, so it started up like normal, and after some short time, it was consuming 10x what it normally does.the result was it was getting hot.
All other parts working fine and give's sound, even with this problem.

The schedule i used is the last PCB version.

I have the update here with the diode for the IRF740 and will wait with using it. The diode i want to use is the CQ652 ultra fast recovery diode (800volt).
Offcourse i share my expierence and will make pics in a later stage.

Now i have to find a decent coil, and not one of 1mtr..around 35/40cm max or smaller when it's verry good working...
I have some coils seeing passing by en also the resistance of a a coil.

Maybe is there somebody that have good expierence of the knowledge to share me his information i need to finish the last stage of creating the DP.

If you B so kind to react on this, i will appreciate it deeply.
I will offcourse, look around on this forum to find the best coil for this MD.

Thx for now!

This forum is a lot written about the construction of this type of coils MD.have coils of different sizes and in my opinion should have at least two sizes coil..Resistance coils must not be small, due to heating IRF740 (IRF840)

[freedan3d]

Hey Hey !!!
Do not forgot something my friends ?
My problem still remains.

I connect p6 and p7 , and my delta not sense gold and its detection is low now

What can I do ?


freedan3d

[porkluvr]

Hey Hey !!!
Do not forgot something my friends ?
My problem still remains.
I connect p6 and p7 , and my delta not sense gold and its detection is low now
What can I do ?

freedan3d

Hi to all
I had a bad mistake
I had a Short circuit between p6 and p7
I replace any components and my delta work now but it didn't sense gold only
It detect Iron , silver and ... but not gold !!!!

Freedan3d

Question for you: What exactly did you mean by saying "I replace any components ..."

Which component are "any"? All of them? How about you tell us some useful details?

[Oorlam]

This forum is a lot written about the construction of this type of coils MD.have coils of different sizes and in my opinion should have at least two sizes coil..Resistance coils must not be small, due to heating IRF740 (IRF840)

Yes, i know. Somehow there's not a treath found that say's..this the best coil ...... in sizes/windings/thinkness etc: and how to make..Somehow, i mis a compolation like a end story how it must B. offcourse i try some things out, started with my 1st one soon.. (40Cm)..let's see what is does..

Thx for responding

[Oorlam]

Well, this threath is a bit on the quiet side..

the 40Cm coil works perfect and tested today a 28Cm coil and also this one works good. Didnt know how easy this all works.

Still, the recovery time is slow, and yes i can adjust it to make it faster, but losen sensitivity.. Want to spend some time, to get a better recovery and not losing sensitivity..

coil 28Cm 24 turns. 0'5mm, rg58 coax cable. good air test! 450uh

[kt315]

Hey Hey !!!
Do not forgot something my friends ?
My problem still remains.

I connect p6 and p7 , and my delta not sense gold and its detection is low now

What can I do ?


freedan3d

did you connect T9 Base to C27(+)?

[szucs_g]

Changed the manual search tuning. I won it 5 cm in air.

[szucs_g]

What are the correspondence points between main PCB and LCD PCB?

I should not be smart ... As I started to read through the forum. Then I asked. The former contains all the regulations. Later still stutter problem. Therefore, there are a GURU's.

[Oorlam]

Changed the manual search tuning. I won it 5 cm in air.

You have done this and won 5cm? what you didt to acchieve this.?