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Path: ...!news.roellig-ltd.de!open-news-network.org!weretis.net!feeder8.news.weretis.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: liz@poppyrecords.invalid.invalid (Liz Tuddenham) Newsgroups: sci.electronics.design Subject: Re: Oscillators in LTspice Date: Fri, 18 Oct 2024 20:52:10 +0100 Organization: Poppy Records Lines: 26 Message-ID: <1r1n5rs.m7sx9612xw03kN%liz@poppyrecords.invalid.invalid> References: <veu2ki$3cmo3$1@dont-email.me> <v255hjtf7jcnlj2h0hm27pkjj3rjj31121@4ax.com> <1r1n4a4.7xtcfutythy8N%liz@poppyrecords.invalid.invalid> <dke5hjl05chohdt58tbiarkrd9j5qk0bs5@4ax.com> X-Trace: individual.net MUTjQgXR4+lcHFSx/ja/Qgh3zelEnPgOvMLb5TBtYg/kJYB6Yq X-Orig-Path: liz Cancel-Lock: sha1:VezX39087+oPeNFuOG3CHaRSCZs= sha256:I8S6ImhPkky0cJZd+TOczuRTGTw5mDm9H0D6oR1XPZ8= User-Agent: MacSOUP/2.4.6 Bytes: 1712 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. -- ~ Liz Tuddenham ~ (Remove the ".invalid"s and add ".co.uk" to reply) www.poppyrecords.co.uk