BARACUDA-Legend-1

[nelson]

List of all components included off board

Te felicito Alexismex, buen aporte hermano y ojala podamos juntos hacer andar este viejo pero excelente equipo.

Atte.

Nelson

[Alexismex]

List of all components included off board

[nejdet]

Good work!

[Geo]

Hi Alex...
Very good work.
Congratulation
I constructed it before 3..4 years (i used the schematic of geotech) but it did not work. It is time to see if there are differences.

Regards

[kt315]

Alexis, nice home work... thanks. I only would like to reminder a point Chris did begin to learn the device from.

Chris
11-13-2002, 08:39 AM

https://www.geotech1.com/thunting/tech/images/Barracuda_PRE1.jpg

Hi

this is a redrawing from a very blur copy of the Baraccuda PI. If you are interested you can cross check the diagram and post the errors in this forum. Please read the note in the schematic.

thank's in advance....Chris

Carl
11-13-2002, 03:19 PM
Here is what I have, from an older board:

R1 - 100k
R6 - 33k
R11 - 22k
R12 - 33
R13 - 100
R14 - 0
R15 - 150k
R16 - 100k
R17 - 6.8k
R18 - 39k
R21 - 330
R22 - 270k
R23 - 1k
R24 - 150k
R25 - 1M
R26 - 1k
R27 - 20k
R28 - 20k
R29 - 25k (?)
R31 - 33k
R33 - 2.2M
R34 - 100k
R35 - 270k
R36 - 100k
R39 - 33k
R40 - 27.4k

C7 - 100p
C17, C18 - 220u/25v
C19 - 0.1u

Q1 - TIP127 (Darlington PNP)
Q3, Q4 - 2N5485

7660 - pin 8 to B+, pin 6 N/C

Everything else matches. I'm sure there have been component tweaks over the years, so other boards may vary.

- Carl

[WM6]

To morrow the list of components and next week schematic drawing software published

Have a good time with this beauty.....old vintage detector still alive and good alive!!!!!

Alexis

Great work, Alexismex.

Thank you.

[hobbes_lives]

The circuit is quite similar to the Whites Surfmaster PI. It has a few minor differences, but looks like it operates on the same basic principle.

[Alexismex]

To morrow the list of components and next week schematic drawing software published

Have a good time with this beauty.....old vintage detector still alive and good alive!!!!!

Alexis

[Alexismex]

Board... draw by hand old tech

[Alexismex]

sorry,

[Alexismex]

next 5 end photos

[Alexismex]

next 5 photos....

[Alexismex]

Hello ,this is my aportation for this 2011 year for all my friends of the Geotech Forum...
It is about the legendary BARACUDA...yes i have bought with a good LUCK a 2 hand old model from 1994 ...i test it very nice ...detect in air= alum.coca can at 65 cm very well and gold ring (20mm) at 26cm with 11pulg coil diameter.....NOT BAD !!!! ...nice Audio" also unique" in comparaision with another detector....
General spec mesured by me
-transmiter pulse Fcy= 640 PPS
-Transmitter pulse width= 100 uS (microseconds)
-pulse delay =begin at 22 uS to 60 uS .
-Position knob Delay 1= 22 uS, position 4 =40 uS, Position 9 = 60uS
-sample pulse window 45 uS
Current consumption - 100Ma at 10,5V

I have reverse eng the schematic ...VERY EFICIENT and a beauty design for this particular pulse detector.... bravo Baracuda !!!!
at continuacion i will put some photos i do not remenber to send a compressed archive but if friend like Quiozy can make it ...better
have fun,
Alexis