[sdiy] Discrete Op Amps

[mskala at ansuz.sooke.bc.ca]

On Mon, 10 Apr 2017, Ingo Debus wrote:
> Have there ever been transistors that were not on chips? How were they made then?

Depends what you mean by "chips," but the first fews generations of
discrete transistors (alloy-junction and grown-junction) were made without
the photolithography that's used for ICs.

-- 
Matthew Skala
mskala at ansuz.sooke.bc.ca                 People before principles.
http://ansuz.sooke.bc.ca/