Look what neigbours kids did!
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garada
- who u callin ne guy bruv
- Posts: 17
- Joined: Wed Dec 23, 2020 7:04 pm
Re: Look what neigbours kids did!
The components are silk-screened, the author is USTAOGLU from Turkey or India, THE PHOTOS ARE FROM the PCBWAY submitted projects page.
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garada
- who u callin ne guy bruv
- Posts: 17
- Joined: Wed Dec 23, 2020 7:04 pm
Re: Look what neigbours kids did!
Transistor all BFY90, Pin 4 is not used, in the silkscreen and some photos of the author it is another standard 3 pin encapsulation, but it indicates all BFY90, of course similar equivalents can be used.
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Albert H
- proppa neck!
- Posts: 2957
- Joined: Tue Apr 05, 2016 1:23 am
Re: Look what neigbours kids did!
The guy who designed this little PLL used BF494 at first and BF199 later on.
"Why is my rig humming?"
"Because it doesn't know the words!"
"Because it doesn't know the words!"
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garada
- who u callin ne guy bruv
- Posts: 17
- Joined: Wed Dec 23, 2020 7:04 pm
Re: Look what neigbours kids did!
Indeed, they are the most suitable for that design, BF199, BF494, 2SC930 would be my choice at least for the oscillator, I do not rule out building one to test thoroughly although I prefer a dual gate mosfet oscillator type BF980 or similar for these small toys.