Searching scheme PI (non fe)

[smity]

Who is the scheme to the PCB?

[tragac3]

This is very familiar to me.Give more details.

[ApBerg]

http://www.geotech1.com/forums/showthread.php?t=14823

It is, I think, based on the schematic & pcb that is in post no 14. I see some "modern" components Ne4434/uA709 , IRF740 etc. and higher volt 18 / 12...

Do you have the sprint layout file from it ?

Regards.
Ap

in the past I made a working board from the pcb that is in post 14, it is working good ! no disc ! only all metal as most PI detectors !

[smity]

For ApBerg

Hello ApBerg!!! I found the scheme to the detector. This modification xl 500. Scheme to check. If you awake to the PCB, do please long. It is they you have a good turn out. Yours!

[georgi.g.zhelev]

XL500 mod

Hello, everyone! This scheme is "HL500 mod". The power unit is 100% incorrect! LM317 (+5 v) will not work! 7905 (-5v) is not correct! 7812 (-12v) incorekt,to be replaced in 7912 and to include correct !

sorry for bad English G.L.

[porkluvr]

Hello, everyone! This scheme is "HL500 mod". The power unit is 100% incorrect! LM317 (+5 v) will not work! 7905 (-5v) is not correct! 7812 (-12v) incorekt,to be replaced in 7912 and to include correct !

sorry for bad English G.L.

Good observation! That power supply is in trouble.

[smity]

Warning In the scheme a lot of mistakes. You need a lot to refine.

[ossamaussama]

error

Hello ApBerg!!! I found the scheme to the detector. This modification xl 500. Scheme to check. If you awake to the PCB, do please long. It is they you have a good turn out. Yours!

errors about irf740


alot of error

[Alexismex]

Hello furum,
I have tested POWER SUPPLY OF THE XL500
It is OK 100%, please take your protoboard and test in 10 minutes...i have
and i thing all the schematic is good!!!!
Have nice day
Alexis

[georgi.g.zhelev]

XL500 PS

Hello furum,
I have tested POWER SUPPLY OF THE XL500
It is OK 100%, please take your protoboard and test in 10 minutes...i have
and i thing all the schematic is good!!!!
Have nice day
Alexis

Hi, Aleximes! I think you're wrong! Look again shematic PS XL 5OO. OK?

[Alexismex]

Hello Georgi
I have post in another thread power
See i have explain this time with colors
if you make this powersupply and measure voltage between green line (GND) and the others you have +5V, -5V, -12V
just what you need !!!for the Xl500 PI
The only inconvenience is if you use 3 Gel Cel batteries of 6V to sum 18V
very heavy

[smity]

Please note that the scheme is nowhere common ground, Where draw-12V, in fact, probably, GND. And I think that the power of +18 V, it is unnecessary. 7812 can be thrown out and do a good power supply from the battery +12 V

[kt315]

Hello Georgi
I have post in another thread power
See i have explain this time with colors
if you make this powersupply and measure voltage between green line (GND) and the others you have +5V, -5V, -12V
just what you need !!!for the Xl500 PI
The only inconvenience is if you use 3 Gel Cel batteries of 6V to sum 18V
very heavy

certainly you are wonderkind and garett's engineers are idiots vs you. why you did throw THE CONVERTER +5V from XL-500 on the scrap-heap?

[kt315]

REAL Garrett XL-500 schematic here.

[Alexismex]

Hello KT315
I know the schematic from many years ago and i have in my archive....
Ing garrett !!!....Because with a converter you can work with 8,4V and the pro500Xl work with 18v without converter!!!!!see