[sdiy] The Visible VCO

[René Schmitz]

Hi John, Mark and List,

Its not really a VCO. Its really just a variable frequency oscillator. 
The tube is configured as a schmitt trigger. It looks as if the thing 
would have exponential slopes. One thing that is a bit fuzzy is how the 
cap gets discharged. I guess thats via grid conduction. Another thing is 
that it is unbuffered. It looks as if it was a deflection oscillator for 
a scope or something.

Cheers,
  René

mark verbos wrote:

> more importantly, who's going to try building that circuit?
> 
> Mark
> 
> 
> 
> john mahoney wrote:
> 
>> Now *this* is an oscillator:
>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3756550940
>> -- 
>> john
>>
>>
>>  
>>
> 


-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159