Delta Pulse

[Nicolas]

Hi Jap

Testing the points A,B,C and E for connecting the LCD
I found the following values:
A=10.28V
B= 8.74V
C= 7.42V
D= 0V
E= 12.44V

Is this normal after you? is what are the exact values? and how to find them?

But it works normal same with C25=224nF 630V because I do not find 63 or 100V in the market.

Cordially

[kt315]

And the frequencies? My work with 400 Hz and similar coil (40 cm, UTP cable CAT8, 2,8 ohm, 500 uH). With 100 Hz the IRF warmed. I changed 740 to 840.

decrease PULSE WIDTH at its minimum to 100 microsecond. add a resistor and electrolitic capacitor in SOURCE pin of MOS-FET according the DP schematic.

[Nicolas]

And the frequencies? My work with 400 Hz and similar coil (40 cm, UTP cable CAT8, 2,8 ohm, 500 uH). With 100 Hz the IRF warmed. I changed 740 to 840.

Hi Szucs_g
But 400 Hz is not good for depth
The good is 130.....170 hz
If is warmed little no problem but not so much hot

Best time

[szucs_g]

And the frequencies? My work with 400 Hz and similar coil (40 cm, UTP cable CAT8, 2,8 ohm, 500 uH). With 100 Hz the IRF warmed. I changed 740 to 840.

[Nicolas]

Hi jap
I used cable 8x0.5 mm, 3trx8 = 24 tr , R=2.7 H= 0.555 mH
It work good now.
What do you think? of this result box coca cola detected at 25 cm
What is the nobre to turn for framework 1x1m with this type of cable?
Thx for your help and knowledge

[Nicolas]

Hi Nicolas
-Bad coil because the type of wire is ~ not Copper.
-try CAT5 .
best time
j.

Hi Jap

Ok I'll try another type of cable
thank you and if I find another problem. I contact you

Note: I soldered the IRF 740 in the first place upside down, but after I put it right
if you thought that any defective component or

Best Regards
Nicolas

[jap]

Hi Jap

I need your help

I build coil 40 cm two wire x12 tur 0.5 mm R=2.7 Ohm 0.580mH
R5 = 2.2k 1/w
IRF 740 is hot
and I test coil not detect small parts only 40cmx20cm parts

What the problem?

Hi Nicolas
-Bad coil because the type of wire is ~ not Copper.
-try CAT5 .
best time
j.

[labtec1]

whether someone can pstavi final version of the PCB and parts list, since a lot of them here, and I do not know which one is best.
or make all and then see what works best
thanks for answers
greeting

[Nicolas]

Hi Jap

I need your help

I build coil 40 cm two wire x12 tur 0.5 mm R=2.7 Ohm 0.580mH
R5 = 2.2k 1/w
IRF 740 is hot
and I test coil not detect small parts only 40cmx20cm parts

What the problem?

[koko22]

Thank you very much jap

[kt315]

KT315 might have something to say?

you will get a real fun making DP! good luck!

[labtec1]

Did you mean: опрости ој енглески је врло лош па користимprevodilac


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forgive our English is very bad, so I use translated

[labtec1]

KT315 might have something to say?

[jap]

Hi KoKo22
-U can,,,1N5817=1N5818=1N5819=BYS21=BYV10-,,,, OR any Schottky diode.
best time
j.

[koko22]

Hello everyone
can i replace diod 1n5819 Located in lcd schematic??