Delta Pulse

[supermen]

Japanese Thanks for the answer ..

[pigeon]

Hi pigeon
a schematic that U need it .
best time
j.

hi jap

I built the circuit lcd but 7805 is very hot in addition there is no longer of light on the lcd. what should I do please? is what I have to do another or change the 7805?

best time

[jap]

Hi pigeon
put a photo ,and the # of LCD use,may the error from conection!!! in this case
not power on!!!!!
best time
j.

[rajesh]

hi sharky kaha they tum itne din from geotech forum se door dont worry i have done delta plus coil size 15 inch /15 inch square coil it can detect steel shed sheet at 9 feet clearly..rajesh

[kazem2114]

I have made several pi detectors and my favorite for large objects is delta pulse.
is very powerfull bolive me!!!

Hi dear
I had made delta pulse and it doesn't work at all... I need some help


what's the role of these 2 parts?????and what's the voltage of " -E/Tr9 "????
I didn't see Tr1 in any parts of circuit but here???

[pigeon]

Hi pigeon
put a photo ,and the # of LCD use,may the error from conection!!! in this case
not power on!!!!!
best time
j.

hi jap

is the project of lcd discrimiation correct?because i have a pic with the whole program

thank you

best time

[jap]

Hi pigeon
OK....test the project of lcd discrimiation Alone,To determine if the defect alone or the connection with Delta.
best time
j.

[jap]

Hi dear
I had made delta pulse and it doesn't work at all... I need some help


what's the role of these 2 parts?????and what's the voltage of " -E/Tr9 "????
I didn't see Tr1 in any parts of circuit but here???[/QUOTE]
Hi Kazem2114
the role of these 2 parts 1- to get +E=+12V,-E=-10.6V.
2-ITS protection T2,T3.
3-Tr1 mean test point.
4-T1 is fet
5-Tr9 test point=-10.6V
best time
j.

[kt315]

stage on T2 and T3 is serving for against overloading of preamp. it moves impulses of sampling at right side of 'delta' pulse, at a zone with more lower amplitude, beginning from some level or threshold on output of the preamp. so the stage is turn off in some 'diapasone' and does not operate.

[pigeon]

Hi pigeon
OK....test the project of lcd discrimiation Alone,To determine if the defect alone or the connection with Delta.
best time
j.

ok.thank you

[kazem2114]

Hi dear
I had made delta pulse and it doesn't work at all... I need some help


-E=-10.6V.
j.

hi
could you please help me more??
I can't get " -E=-10.6v " there is a positive voltage here...I checked my connection, they're not wrong
I simulated this part and it doesn't give me any negative voltage??????????????????????
what's the problem????????

[jap]

Hi Kazem2114
could you please put a photo!
best time
j.

[kazem2114]

Hi Kazem2114
could you please put a photo!
best time
j.

Thanks for answering
This is my simulation...It gives me just -1.2mili volt

[jap]

Hi Kazem2114
I hope I explained Thought.
best time
j.

[kazem2114]

Hi Kazem2114
I hope I explained Thought.
best time
j.

Thanks but the things that you're saying , it looks like we have 2 voltage source
one to give +12v
one to give -12v
because the voltage of negative prob of a battery is not -12v , it's like ground
Am i right?????????
There's no circuit for making -12v in the schematic