Sujet : Re: An actual circuit
De : user (at) *nospam* example.net (bitrex)
Groupes : sci.electronics.designDate : 24. May 2024, 20:02:23
Autres entêtes
Message-ID : <6650d62f$0$2363134$882e4bbb@reader.netnews.com>
References : 1 2 3 4 5 6
User-Agent : Mozilla Thunderbird
On 5/24/2024 2:00 PM, bitrex wrote:
Yes, it is mysterious. Set both drain resistors to 3.3K and zoom way
up on the two source voltages for the first 20 seconds.
>
LT Spice may have some hidden asymmetry. It has to do math
sequentially, maybe.
>
In real life, parts will be plenty asymmetric. Especially jfets.
>
There are bunch of variants of this circuit, I call it the "Forest Mims Oscillator" cuz in one of his radio shack circuit books was where I first remember seeing it as a teenager.
I'm pretty sure he didn't invent it though and that I've seen it in books from the 60s also, it was probably invented about 5 minutes after the PNP.
An actual circuit
Re: An actual circuit