CRYFTON .....

[abdou2014]

At the beginning it is impossible to detect a magnet with coil 30, I detected it with only with solenoid coil. after the modifications I managed to detect it with the coil 30. but I do not know if this result proves that it is operational , I would like to have the opinion of Geo !

[Geo]

This project has been frozen for 6 years. The device is working in general, but I could not handle its settings. Can anyone tell me what frequency does the receiver and the induction oscillator work?

The device works at 68.5 Khz

[Geo]

The IR manages a transistor that turns on and off the power supply of IC7. The IR does not participate in any process. When the device box opens, it blocks the operation of the IC7 and the excitation generator stops working. This is probably done so that the principle of operation can not be traced when the device opens.

It is NOTHING.
If IR sensor receives signal then there are many methods to display it.
One simple is to drive a led.
Other is to driving the beep generator or to give the signal at input of 358 or to give it at input or to make an other one beep generator etc....
Here the constructor prefers to gives the signal at input with a most sophisticated technology method. He connected the output (555) to a antenna and try to excite the input coil. You must see only the coil for preamplifier input (30 turns) nothing else. Be sure for it:δροσερός:.

[Geo]

At the beginning it is impossible to detect a magnet with coil 30, I detected it with only with solenoid coil. after the modifications I managed to detect it with the coil 30. but I do not know if this result proves that it is operational , I would like to have the opinion of Geo !

I don't know.
I never used a magnet to test a lrl.

[dragomir]

Thanks Geo. Does this device get a compass effect?

[Geo]

If i remember good i had compass effect when i had very hight gain (especially at preampl..)

[GOLDEN LILLY]

The two small coil wound in a wood former is not an excitation coil. It is used to add the inductance of the main coil. The small coil is connected parallel to the main coil. Adjusting the small coil distance in each winding makes a slight change of the total inductance but only in picofarad...It is like a capacitance trimmer to get the exact frequency...

[dragomir]

I think it's not. I think things are the same as Francoitali, but at a lower frequency

[nelson]

Hi Geo.
Since i stopped my attemps to fix my crypton obmd1 that i got from Andreas that never worked, i m asking you if we can exchange information to see if we can make it work.
Yes crypton has Andry flint circuit on it. Crypton at first time turned on, make beeps, but i notice that beeps were cycling and are we not stable, making me thing that the circuit i owned has some induced errors, because Andreas sold it to me has a demo unit.
Please lets talk by PM.
Regards
Nelson

Here is the schematic of Cryfton. I don't know if it is obmd1 or obmd2.
If anybody knows can inform here.
Next days i will complete the part list and will attach here.

Enjoy it

[abdou2014]

have you made any changes ?

[Geo]

Hi .
The member BRS inform me that there is error at schematic near to audio generator 4016.
After check i found the errors., so i attach here the edited schematic.

BRS.. thank you

[Geo]

Hi Geo.
Since i stopped my attemps to fix my crypton obmd1 that i got from Andreas that never worked, i m asking you if we can exchange information to see if we can make it work.
Yes crypton has Andry flint circuit on it. Crypton at first time turned on, make beeps, but i notice that beeps were cycling and are we not stable, making me thing that the circuit i owned has some induced errors, because Andreas sold it to me has a demo unit.
Please lets talk by PM.
Regards
Nelson

Hi Nelson, how are you.
I believe that this lrl can't give good results but if you want sent me an email and we can see for any solution.

Regards

[GOLDEN LILLY]

OBMD 1 may be good but the newer model may be better...Anyone who has the schematic of the new model? I am referring to OBMD 2 or 3.

[Geo]

Another one Fraud....

[nelson]

Hello Geo and thanks for your response.
Mmmm i have doubs if it really works, because lrlman hho also design tha arc geo logger, for it looks like a very serius and honest person. Mr Tim Williams, has made a few test with crypton and those test shows that it really worked for him. However, his devise is obmd2 and not a demo unit like the one i have.
When i get back to home, i will send you some exra information.
Regards
Nelson

Hi Nelson, how are you.
I believe that this lrl can't give good results but if you want sent me an email and we can see for any solution.

Regards