2 boxxxx :)

[chemelec]

I really thank you Gary(chemelec) for ca3035 circuit I have been looking for it for long time.


you seem to be forgot the 1uf capacitor which connected to headphones and the earth



I tried to connect them in the circuit you made as shown in the attachment:

[ATTACH]16181[/ATTACH]


please check it



And can I really use it with the transmitter circuit made by Charles D. Rakes:


[ATTACH]16182[/ATTACH]



And I can not see this project on your website, please give me it's name

No I Never added that Cap on the Schematic or PCB I Designed.
I put it on seperate.

My Circuit Works very good as a Replacement, So make it and try it.

I DID NOT Like the Final Results of that Detector, So I Removed it from my website.

[mehdi]

No I Never added that Cap on the Schematic or PCB I Designed.
I put it on seperate.

My Circuit Works very good as a Replacement, So make it and try it.

I DID NOT Like the Final Results of that Detector, So I Removed it from my website.

thanks a lot dear chemelec
can you post some test result here? i was built it it some month ago and it work, but i leave it because i went to make some LRL, so if you can post some test and say to us what is detection depth for a car , it will be useful for me!.
thanks in advance
mehdi

[chemelec]

Sorry, I built that 2 box detector, quite a few YEARS Ago. Can't remember the Results now.
But I Was Not impessed with it, And Threw it out.

However, My Transistor Version of the CA3035 does work good.

[Hisoka]

two box

Thank you agian Gary(chemelec) but can I use the transmitter circuit made by Charles D. Rakes as I posted previously
can I also replace the 2n2924 in the transmitter circuit with BC183 ?

No I Never added that Cap on the Schematic or PCB I Designed.
I put it on seperate.
Did you mean that you never used that capacitor in your circuit ?


Please check this circuit if everything correct after I removed that capacitor :


[ATTACH]16190[/ATTACH]



I DID NOT Like the Final Results of that Detector, So I Removed it from my website.

Please What would you suggest as good sensitivity detector and can be home made.

[Hisoka]

sorry for mistakes in quote in previously post


Thank you agian Gary(chemelec) but can I use the transmitter circuit made by Charles D. Rakes as I posted previously

can I also replace the 2n2924 in the transmitter circuit with BC183 ?

Quote: Originally Posted by chemelec
No I Never added that Cap on the Schematic or PCB I Designed.
I put it on seperate.

Did you mean that you never used that capacitor in your circuit ?



Please check this circuit if everything correct after I removed that capacitor :

I DID NOT Like the Final Results of that Detector, So I Removed it from my website.

Please What would you suggest as good sensitivity detector and can be home made.

[Hisoka]

Friends can any one explain these symbols:
6-32
6-13/16"
2-1/2" 8-32 screw


in following picture:

[chemelec]

6-32
6-13/16"
2-1/2" 8-32 screw

They are USA Screw sizes in inches.

[mehdi]

Sorry, I built that 2 box detector, quite a few YEARS Ago. Can't remember the Results now.
But I Was Not impessed with it, And Threw it out.

However, My Transistor Version of the CA3035 does work good.

ok, thanks for answer.

[mehdi]

sorry for mistakes in quote in previously post


Thank you agian Gary(chemelec) but can I use the transmitter circuit made by Charles D. Rakes as I posted previously

can I also replace the 2n2924 in the transmitter circuit with BC183 ?




Did you mean that you never used that capacitor in your circuit ?



Please check this circuit if everything correct after I removed that capacitor :


[ATTACH]16191[/ATTACH]



Please What would you suggest as good sensitivity detector and can be home made.

Hi
i was built this schematic and pcb for transmitter and i used 2N2646 instead of 2N4870 and it work good
all the best
mehdi

[Hisoka]

sizes of the box

6-32
6-13/16"
2-1/2" 8-32 screw

They are USA Screw sizes in inches.

But the hight of the box is 2-5/16" , I know it's in inches, but really I don't understand it.



Please Gary can you explain it.

[kt315]

But the hight of the box is 2-5/16" , I know it's in inches, but really I don't understand it.



Please Gary can you explain it.

HISOKA, DEAR FRIEND. what language is your Native? what country you are from? China? Japan? Madagaskar Island? WHAT?

[Hisoka]

Hello, kt315


I am from Syria

[Hisoka]

two box sizes

Hello friends


Does 2-5/16" mean 2,3125 inches ?

[Hisoka]

Friend mehdi, from where did you get this tranmitter circuit, I think the orginal is this:

[mikebg]

Hello friends


Does 2-5/16" mean 2,3125 inches ?

Yes, but you should use point instead comma. The comma in English means 23125 inches