TESORO GOLDEN SABRE

[erolunall]

golden sabre

Hello
I changed bc517 tansistor with mpsa13.But mpsa13 is heating and voice is
downing not same( bc517 is high volume). I made coil with 0.3 mm copper wire .its about 23 ohm.I dont use 10 mf tantalyum cap but normal 10 mf cap.
I used 5.6 and 86 pf capasitor (not 5 p and 68 p farat)
but performans is not good.İt is signalling cigarrete packet about 10 cm.
if an am radio put on battery it giving a bit more performans by changing radio signal.
any idea will be good?
best wishes
Erol Ünal

which type should capacitators be?In Volts?

to Leto

Ok!
But you have to promiss that you will help!?!?!?!??!!?
Because You have made whit sucses unless ONE!
And I am more than beginer.

[Leto]

ahh..

That unmarked cap. is 100nF..
Tantaliums are pretty common capacitators you should find them right-away.
This >tant< cap is part of negative power supply witch is not "state-of-the-art" in this project.. But as Max proposed - you CAN try with electrolitics.

I wanted to make PCB for Sashos detector - but I will NOT: because you are already on the work..

Leto

Did you make Metal detector with meter discriminating ,by Sasho Varna BG?
I am working on that PCB!
Its look like very good ****!

Hi

Thanks Leto!
Why is so important?
I cant find TANT!
Will this afect my circuit?
And also there is one capacitator which
have no value?
Why?
What shell I use?
Thanks

[Leto]

To unregistered

part???
tis75?

tis75 transistors are substituted with BF245c transistors..
Beter still to use tantalium cap..

I suggest you check out the shematic..

To Max

Hello,
Max!
I will try but cant understand:

you can use a normal electrolitic near tis75

part???
tis75?
Thanks for your HElp

To Max

Hello,
Thanks IVCONIC I will try!
What about the capacitator near BC517?What is its VALUE?Its not marked!

[Max]

Thanks Max!
I will try and will report you the results!
When I have looked the PCB again there is one capacitator which
have no value?
Can I use electrolit 10 mF insted of 10mF TANT.?

Hi,
yes you can use a normal electrolitic near tis75 instead of tant. capacitor in this case.

Best regards,
Max

[ivconic]

Read whole thread!


Unregistered, just use 7809....it will work fine.
Dino, read whole thread. You have everything here. Even errors noted here.
regards!

[dino]

Hello there Ivconic i was wondering if it's not a problem to sent me a shematic, pcb and number of coil's with best preformance on my mail. And diferences with original shematic.
Best regards Dino
[email protected]

hi

Thanks Max!
I will try and will report you the results!
When I have looked the PCB again there is one capacitator which
have no value?
Can I use electrolit 10 mF insted of 10mF TANT.?

[Max]

And the 7805 is TO-3!!!!!
But the 78L05 is TO92.I think they are the same!
What do you think can I use 78L05 whit ZD3.0V/250mw(when I find this)?
Thanks

Hi,
78L05 is rated 100mA maximum current. I suggest trying it first with 3.0 volt zener (250 mW ...or also 500mW would be ok). Then if you'll notice that it (to-92) warms too much you could buy/try the to-3. For these circuits...where currents are low I think there's no need of amperes-range regulators, and 100mA are more than enough to keep they work fine.
Anyway, make your test after running it for say 5minutes ...only if it warms up to 45°C or more (would be really strange if so...) you need an higher ampere rate regulator (in to-220 or to-3) to avoid thermal drift and runaway.

Best regards,
Max

and

And the 7805 is TO-3!!!!!
But the 78L05 is TO92.I think they are the same!
What do you think can I use 78L05 whit ZD3.0V/250mw(when I find this)?
Thanks