[Andre Jute[_2_]]

On Jan 2, 11:46*am, Patrick Turner wrote:

The other thing is that loading the top tube cathode does slightly make
the circuit work as a SRPP, but the effect is minor.

Actually, any circuit which works even partially like an SRPP is a
good circuit, especially if the advantage of the SRPP it mimics is a
low impedance. I'm not always so sure that the mu-follower is truly
worth the additional complication over an SRPP for anyone except the
purist who can, as a consolation for the extra expense and
complication, mutter to himself over and over, "Yes, but an SRPP isn't
a real current source and a mu-follower is an exemplary current
source... It's true, it's true!" An SRPP with a single extra resistor
to arrange a voltage lift can in most instances be arranged to work
for practical purposes as well, and probably more reliably, than a mu-
follower.

Okay, I don't want to sound like a cost accountant, but someone must
be realistic.

Quite a bit of other good stuff, some of it at least arguable on
grounds of taste, some of it indubitably right, snipped in the
interest of bandwidth.

Andre Jute
The tubes tend to make people believe in a god, and SS leads them to
the
devil. -- Patrick Turner