LongRangeLocators Forums  

Go Back   LongRangeLocators Forums > Main Forums > Long Range Locators

Reply
 
Thread Tools Display Modes
  #51  
Old 01-13-2018, 05:05 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

.
Attached Images
 
Reply With Quote
  #52  
Old 01-13-2018, 07:50 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

It is good to connect a 10nF from pin5(555) to earth
__________________
Geo
Reply With Quote
  #53  
Old 01-13-2018, 08:04 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

I'll do it, thanks, I have questions, is it better to add a radio to this device ?

and how to connect the radio to the beep generator ?
Reply With Quote
  #54  
Old 01-14-2018, 12:55 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

Not for the time. First "play" with it so to see the problems and to find the solutions and later if you like you can add a radio.
You must connect it to beep generator (from volume potentiometer).
__________________
Geo
Reply With Quote
  #55  
Old 01-14-2018, 12:59 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

I put nothing between the radio and the beep generator to amplify ?
Reply With Quote
  #56  
Old 01-15-2018, 07:53 AM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

Quote:
Originally Posted by abdou2014 View Post
I put nothing between the radio and the beep generator to amplify ?
A capacitor 100...470n is neccessary
__________________
Geo
Reply With Quote
  #57  
Old 01-15-2018, 09:49 AM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

ANDY WITH DIGITAL DISPLAY
Attached Images
 
Reply With Quote
  #58  
Old 01-15-2018, 08:52 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

I attach a preamplifier suitable for this device.
If you will look carefully will see that it is the same amplifier (first 2 stages) of passive receiver from Alonso.
Also the same preamplifier uses the Cryfton OBND1?????????
__________________
Geo
Reply With Quote
  #59  
Old 01-15-2018, 09:33 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

Is that right ?
Attached Images
 
Reply With Quote
  #60  
Old 01-15-2018, 10:46 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

Quote:
Originally Posted by Geo View Post
I attach a preamplifier suitable for this device.
If you will look carefully will see that it is the same amplifier (first 2 stages) of passive receiver from Alonso.
Also the same preamplifier uses the Cryfton OBND1?????????
Sorry i forgot to attach
Attached Images
 
__________________
Geo
Reply With Quote
  #61  
Old 01-15-2018, 10:59 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

There is no pot for gain ???
Reply With Quote
  #62  
Old 01-16-2018, 06:39 AM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

There is one pot at preampl and one at main circuit.
It is better to put preampl and pot near to coil
__________________
Geo
Reply With Quote
  #63  
Old 01-16-2018, 09:47 AM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

There is not all that in my schema, I think there is another version ???
Attached Images
 
Reply With Quote
  #64  
Old 01-16-2018, 11:40 AM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

It is exactly the same (the first 2 transistors). Not so big difference if capasitors are 22n and not 10n.
Potentiometer must be 5k.
__________________
Geo
Reply With Quote
  #65  
Old 01-16-2018, 04:46 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

Do you have any idea about this transformer, name, reference ?
Attached Images
 
Reply With Quote
  #66  
Old 01-16-2018, 08:41 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

Where did you find it ??
__________________
Geo
Reply With Quote
  #67  
Old 01-16-2018, 08:53 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

It's a joke
Reply With Quote
  #68  
Old 01-16-2018, 09:02 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

Can this LRL detect a test field 1 year old ?
Reply With Quote
  #69  
Old 01-16-2018, 09:13 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

Before years i wrote that the MFD by Andy Flind is the base of the schematic of Cryfton.
Before days i attached here the article of the MFD so the members who sent me so many emails to construct it. I saw it as a good opportunity to mod it a little (as to put a preampl) and to construct a lrl as the Crypton with so little money and to see if this lrl works and to save so many money. But i don't see interesting and maybe is better to stop here..
__________________
Geo
Reply With Quote
  #70  
Old 01-21-2018, 06:28 PM
Bill512 Bill512 is offline
Member
 
Join Date: May 2006
Location: Greece
Posts: 76
Default

long time ago...
Attached Images
  
Reply With Quote
  #71  
Old 01-24-2018, 10:50 AM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

nice job, when did you build it ?
Reply With Quote
  #72  
Old 01-25-2018, 06:07 PM
Bill512 Bill512 is offline
Member
 
Join Date: May 2006
Location: Greece
Posts: 76
Default

Quote:
Originally Posted by abdou2014 View Post
nice job, when did you build it ?
thanks, it was 12 years ago (2006)
Reply With Quote
  #73  
Old 01-26-2018, 05:33 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

HI .I finished building ANDY detector , I try it with the PREAM and without the NE555 beep generator. it detect TOTEM transmitter and mobile phone at 1 meter, it does not detect the magnet and the electric watch, I want to know if all is well ???
Reply With Quote
  #74  
Old 01-26-2018, 07:11 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,917
Default

Haha... now you have a Cryfton OBMD-I.
From what i remember you are not very good.
My device was detecting my watches (a Tissot and a Longines) near to coil.
Also was detecting a China watch from 5..6 cm. I saw a video from a member where his lrl was detecting the watch from 9..10 cm far.

__________________
Geo
Reply With Quote
  #75  
Old 01-26-2018, 07:13 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 1,042
Default

The LED display works very well, I have a problem in the audio, the sound of the buzeur is very weak, I do not hear it.
Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 12:28 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.