mineoro special serie 2000

[aft_72005]

4000 series pin out

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

Correctly, pin 7 of all ICs is ground

[aft_72005]

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.
.

[ATTACH]20202[/ATTACH]

The technical number of IC is known

[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]

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]

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]

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!!!