I should have noted a small nit to pick with swallop's answer: Q1 is
not a variable load. It supplies the bias current for Q2. More
current = higher amplitude (up to a point). That's the relationship
exploited by the ALC loop.
--Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
On 9/19/2022 13:27, Mikek wrote:
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On Mon, Sep 19, 2022 at 12:16 PM, <swallowp@...> wrote:
A1 Q2 operating as a grounded base oscillator.? Q1 is a
variable emitter load which regulates the amplitude of
oscillation, driven by the ALC control voltage from Q12 on A8.
?
?Thanks, I see it now.
??????????????? Mikek
