Anyone Built A Whites Pulse Using This Schematic?

[vikki]

Anyone ever made a pcb design to go with this schematic?......
http://www.hobby-hour.com/electronic...l-detector.php
Has anyone built this?
Vikki(uk)

[vikki]

OK i found some more info.....i should do a better search first.....
Thanks
Vikki

[DIRCEU]

Anyone ever made a pcb design to go with this schematic?......
http://www.hobby-hour.com/electronic...l-detector.php
Has anyone built this?
Vikki(uk)

Hi!

Here: http://www.geotech1.com/forums/showthread.php?t=13810

I made it with ApBerg's version (long PCB) and BLACK version both
works very well.
For coil you can try 0.5mm wire and inductance arround 140uH
Resistance max. value = 2R.
Believe me... it's a simple but very good detector which I use usually
on beach.

Regards
DIRCEU

[6666]

DONT FORGET THE CAP MOD FROM PIN 5 ON THE 555 TO GROUND

[vikki]

O.K. Thanks......
Going to take a stab at building this one, did anyone have any pcb's made up for this one, before i dig the old light box out of the loft. Is ferric chloride still the choice for etching boards? For the people who made there own board, which layout did you use(i'd do with a square type board, not long type) oh not surface mount as i have 200 watt soldering iron
Vikki(uk)

[kt315]

Anyone ever made a pcb design to go with this schematic?......
http://www.hobby-hour.com/electronic...l-detector.php
Has anyone built this?
Vikki(uk)

ALL schematics of metal detectors you see and will find in webnet have been taken ONLY FROM GEOTECH

nothing new in your link.

[vikki]

Oh o.k.
Vikki.