[sdiy] Negative resistance elements

Oren Leavitt obl64 at ix.netcom.com
Sat Apr 3 20:38:50 CEST 2021


On 4/3/21 8:40 AM, Mike Bryant wrote:
>> Interesting question. Reminds me of UJT's. There are still a few available according to digikey. I think UJT's were used on some old organs as top octave oscillators if I remember correctly.
> And more famously as the 2N2946 oscillating element in the original Moog 901 modular oscillators.

A royal pain to select and match if you wanted a set of oscillators that 
track half decently!

- Oren


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