[Milsurplus] RE: [ARC5] serious tube

[mikea]

On Tue, Oct 31, 2006 at 02:24:36PM +0000, D C *Mac* Macdonald wrote:
> It's all based upon the theory of negative resistance.
> When you design negative resistors into a special
> circuit, you can develop a negative frequency
> oscillator.  The output of this is fed to a transformer
> with a third (tertiary) winding.  A transformer so
> constructed is known as a step-aside transformer as
> opposed to the normal step-up or step-down version.
> This ouptut drives a a cathode-coupled current
> crippler, which is the heart of the infra-red
> destruction generator.

And that's how KL7F got his (in)famous dovetail-wave generator to 
work. 

Here's the output waveform: 

---    ---------    --------    --------    --------    --------   
  /    \       /    \      /    \      /    \      /    \      / 
 /      \     /      \    /      \    /      \    /      \    / 
 --------     --------    --------    --------    --------   

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin