Will this schematic work?

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Wow...

this simple thing i think it is called "circuit with open base transistor"
yeah i think you can trust this guy that it works...

first time i see such implimentation...
 
whiz115 said:
no...we thank you for this useful link!
although simple circuit it hides interesting theory!
Click to expand...

It's an EXTREMELY old technique - try googling for "neon relaxation oscillator".
 
wmmullaney not all transistors (even 2n2222) can work on that circuit...
have you managed to find any suitable?
 
So does this operate on the same principle as the joule thief (ableit a much slower flash rate)?
 
No, totally different... Joule thief uses a transformer whose coils constantly fight each other making the ckt oscillate, this uses the property of negative resistance that transistors can have.
 
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Thanks speakerguy79.
EDIT: Thanks again, it all makes sense now.
 
Last edited:
The behavior of breakdown in a neon lamp is an example of negative resistance, which is how the transistor is behaving in this ckt.
 
All together now...

Yes wmmullaney, it IS the same circuit!

Try scrolling down a couple of posts and look at what Hero999 has posted.

JimB
 
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