Re: Oscillators in LTspice

On Fri, 18 Oct 2024 20:52:10 +0100, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

john larkin <jl@glen--canyon.com> wrote:
>

On Fri, 18 Oct 2024 20:17:19 +0100, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:
 

john larkin <jl@glen--canyon.com> wrote:
>
[...]
>

Actually, the classic astable mv usually has a genuine hangup state,
both transistors saturated.

>
Return the base resistors to the collectors of their respective
transistors instead of the +ve rail.  That will prevent them from
sarurating and will ensure reliable starting.

 
Right. It makes the transistors go linear if it's not oscillating.

>
Yes,  I discovered that in the early 1970's when I first started using
multivibrators.  I don't remember seeing it documented anywhere.

I invented that too! Roughly the same time.