[sdiy] understanding this one transistor F to V

[Eric Brombaugh]

On Nov 3, 2009, at 4:24 AM, René Schmitz wrote:

> Eric Brombaugh schrieb:
>> Sure looks like a simple flip-flop divider to me.
>
> But thats not a FF but an astable oscillator.

Well, yes. I've heard the cross-coupled circuit on the right called an  
'astable flip-flop', so let's split the difference. My point though is  
to clarify for the OP that the way this circuit is set up there is no  
explicit conversion from frequency to voltage. Instead, the input  
signal is amplified and drives the supply lines of the astable flip- 
flop in such a way that the result is to divide the input signal's  
frequency by two.

At least that was my thought based on a quick glance at the circuit.  
If you've got a different interpretation I'd be interested to hear it.

Eric