mineoro special serie 2000

[kostas87]

Originally Posted by gaucho1961

Hello friends,
What chip is this with a red circle ??
Does anyone in the forum know how to identify it ??
Or give some opinion or suggestion based on the scheme of this circuit.
Thanks to all who can help me.
.

Attachment 20202

Hi gaucho! It's the (NTE 74C14)

[kostas87]

Originally Posted by Geo

look here ...


About coil stimulator search for old threads about it and about DCH85.

Geo ...if the receiver is correct it is not a bfo detector for metals but for cw and ssb.

[abdou2014]

I NEED SOME DERTAILS PLS HELP
DIAMETER OF THE COIL AND WIRE ( BLUE AND RED )

[Geo]

Originally Posted by abdou2014

I NEED SOME DERTAILS PLS HELP
DIAMETER OF THE COIL AND WIRE ( BLUE AND RED )

Wire of loop is 2.5mm^2 and the wire of potcore is 1mm diameter but i think is not critical

[aft_72005]

Originally Posted by brasilpb

Hello... This circuit is not displayed.. Does anyone have the circuit to re-upload it?
Regard

[aft_72005]

Originally Posted by reza vir

4000 series pin out

These pinouts are wrong.. The pin 7 !!!!

Correctly, pin 7 of all ICs is ground

[aft_72005]

Originally Posted by gaucho1961

Hello friends,
What chip is this with a red circle ??
Does anyone in the forum know how to identify it ??
Or give some opinion or suggestion based on the scheme of this circuit.
Thanks to all who can help me.
.

Attachment 20202

The technical number of IC is known

[aft_72005]

Originally Posted by aft_72005

Hello... This circuit is not displayed.. Does anyone have the circuit to re-upload it?
Regard

Does anyone have the main circuit without the red lines?

[aft_72005]

Originally Posted by Geo

look here ...


About coil stimulator search for old threads about it and about DCH85.

The 658 transistor circuit and its surrounding parts do not function as a Colpitts oscillator.

[Pahom]

Originally Posted by aft_72005

The 658 transistor circuit and its surrounding parts do not function as a Colpitts oscillator.

I think that the whole scheme does not work properly. Most likely, only the principle is embedded here.

[aft_72005]

Originally Posted by Pahom

I think that the whole scheme does not work properly. Most likely, only the principle is embedded here.

Yes .. there are defects in the circuit .. interestingly, someone wrote that I made it and it works well !!!!!

[aft_72005]

brasilpb , the publisher of the original circuit plan, is not responsible... the original plan has been removed from here... the photos of the circuit PCB have also been removed!!!