Bulgarian 'PULSE STAR' (... close to Legendary one)

[georgi.g.zhelev]

PS-G

0. RV6 U4 pin6 + 0,2v !
1. Potentiometer RV3 (DELAY) put in a position of maximum sensitivity and stable operation of the audio channel. (do not touch more)
2.RV5 discrimination> See ostsilograma scheme. (Q6 colector) fixed and not touch more!
3.RV7, RV8> putting U7A (TR3) 0V. more .. do not touch!
4 .. Potetsiometar RV11 >discrimination indicator to zero.
5 .. Push and relax ZERO, RV11 ... indicator of discrimination> 0 <!
6.RV9 : position max sensivity audio channel (U8a)

IMPORTANT! BEFORE SETUP, OFF TV!! (ALL TV> OFF)
CHANNEL discrimination is very sensitive! G.L.!

[steaua581]

Pulse Star G

0. RV6 U4 pin6 + 0,2v !
1. Potentiometer RV3 (DELAY) put in a position of maximum sensitivity and stable operation of the audio channel. (do not touch more)
2.RV5 discrimination> See ostsilograma scheme. (Q6 colector) fixed and not touch more!
3.RV7, RV8> putting U7A (TR3) 0V. more .. do not touch!
4 .. Potetsiometar RV11 >discrimination indicator to zero.
5 .. Push and relax ZERO, RV11 ... indicator of discrimination> 0 <!
6.RV9 : position max sensivity audio channel (U8a)

IMPORTANT! BEFORE SETUP, OFF TV!! (ALL TV> OFF)
CHANNEL discrimination is very sensitive! G.L.!

---------------------
Hello Georgi and Forum!
If i set the pulse of 50uS on Q6 colector then pulse disapears on Q7 and discrimination
does not funcion! The detection is very bad! I try to set all step by step but once i
get to set Q6 colector the pulse on Q7 disapears...I wonder why??

Regards
Marius

[georgi.g.zhelev]

PS-G

-------------------------
Hello Georgi and Forum! I have solved the problem with the pulse on Q7.
I have set RV5 so i could get on Q6a Negative Pulse of 50uS.After that i have set Delay half way( 5K-0-5K)!after that with the help from RV7 and RV8 i have tuned so that i will get an output at U7A 0V, but this value of 0V its not stabile and does fluctuate between 0.20V and +0.20V!
Rv11 is set to half way and i pres Reset and the indicator shows me 0 but its not stabil! When i put Iron close to the coil the midle moves to the left and REd light stays on and im getting loud sound! When i put copper the indicator moves to the right and the Red light stays of and i dont get any sound! In any cases "The Green Light Stays On!detection is verry poor.A spray at 20 cm and a coper coin at 2-5cm.
What should i check...??

Regards

Marius

steaua 581,I have written to check the installation of all transistors, collector, emitter, base. Are included???? INSTALLATION ERRORS !!!!! Q5, Q6, Q7, reverse colector - emiter; Q8, Q9, Q10 collector-emitter reverse. Q10 replaced with BC 238 (or other smail signal tranzistor), BC337 800ma not use!

[steaua581]

Pulse Star G

steaua 581,I have written to check the installation of all transistors, collector, emitter, base. Are included???? INSTALLATION ERRORS !!!!! Q5, Q6, Q7, reverse colector - emiter; Q8, Q9, Q10 collector-emitter reverse. Q10 replaced with BC 238 (or other smail signal tranzistor), BC337 800ma not use!

--------------
Hello georgi,
All Q5, Q6, Q7, Q8, Q9, Q10 are right in place i have checked...Can i change Q10 ( BC337) with BC547.???..

regards
Marius
------------------------------------

[georgi.g.zhelev]

PS-G

--------------
Hello georgi,
All Q5, Q6, Q7, Q8, Q9, Q10 are right in place i have checked...Can i change Q10 ( BC337) with BC547.???..

regards
Marius
------------------------------------

All wires PCB> potentiometers must be short (desirable shielded) OK?Check PCB connections for errors.
Q10 BC547 OK! G.L.!

[DIRCEU]

Hi! Alexismex

I'm very interested in this project and I'm drawing now a double-sided PCB but it's very hard ...you already design your own?
May be you have new results from the performance this detector?

Best Regards

Dirceu

[DIRCEU]

OK! AGAIN!

Hi! Alexismex

I'm very interested in this project and I'm drawing now a double-sided PCB but it's very hard ...you already design your own?
May be you have new results from the performance this detector?

Best Regards

Dirceu

[fmnotes]

PULSE STAR G

HELLO.
I MANUFACTURED PULSE STAR G.
THE ALL REGULATIONS WITH OSCILLOGRAPH, ALL GOOD,
AND THE ALL 2 INDUCTORS GOOD.
THE INSTRUMENT WORKS, BUT SMALL DEPTH OF LOCALIZATION OF OBJECT.
A BOX COCA COLA IN THE 20CM.
WHO THEY IS THE PROBLEM?
WHICH ERROR EXISTS IN THE MANUFACTURE?

I REQUEST WHOEVER CAN HELP ME.
I THANK

[Orbit]

Hello everyone. Is the pulse of the old g someone kicked in, it should.

[mikebg]

Hello everyone. Is the pulse of the old g someone kicked in, it should.

Orbit, I used two different translating machines to translate your sentence, but did not receive meaningful expression.
Would you say the same, but in other words to enable the machine to translate it into other languages?

[Qiaozhi]

Hello everyone. Is the pulse of the old g someone kicked in, it should.

Orbit, I used two different translating machines to translate your sentence, but did not receive meaningful expression.
Would you say the same, but in other words to enable the machine to translate it into other languages?

Unfortunately it doesn't make sense, even without the translator.

[Orbit]

I just wanted to know , is someone made this device and does it work , and how ( what characteristics you have got)

[maikl]

I just wanted to know , is someone made this device and does it work , and how ( what characteristics you have got)

Zemljak neke odgovore vec imaš samo što treba da odradiš sledece: u brovser otkucas GEOTECH FORUM u donjem meniju pojavice se "Geotech Forum-(prevedi ovu stranicu)" ti klikni na "prevedi ovu stranicu" sve ostalo ce biti na Srpskom. Moj predlog je da instaliras "Google Chrome" instalacija je besplatna sa interneta i imas automatski prevod na Srpski. Ako hoces da nesto napises na Engleskom u bilo kom brovseru (Mozila,Opera,Gugl...) u gornjem levom uglu stoji:Veb-Slike-Mape-Prevodilac-... U prevodiocu prevedi nešto sa Srpskog na Engleski pa taj prevod stisni "copi" onda "paste" i ponovo prevedi ali kontra sa Engleskog na Srpski pa vidi šta mašina kaže-videces da masinski prevodioci nisu savrseni.Pozzz.

[Orbit]

Hvala maikl .

[Falcon]

Hi! Alexismex

I'm very interested in this project and I'm drawing now a double-sided PCB but it's very hard ...you already design your own?
May be you have new results from the performance this detector?

Best Regards

Dirceu

Dirceu Hi, I would like to make a metal detector, but I'm an amateur at it, I would like your opinion on what to do, since we are "neighbors" can you help me? I wonder if the cost benefit is worth. My email address is -> [email protected] - I would like to speak in Portuguese (hehehe)