On 5/25/11 1:47 PM, Tony Duell wrote:
Of course,
just for vintage warm fuzzies, little can challenge an old Tektr=
onix scope. I recently acquired a Tek 561A from a friend locally. Mmmm, v=
The 560 series are small and relatively simple. Now, what yuu really want
is a 545 (early model with the distributed amplifier) or 547. And what
yuu swap your firstborn for is a 555 (not the timer chip :-)).
Nice. ;) I currently have an RM547 and a 555. I lack the power
supply umbilical cable for the 555 though. I had a 545A many years ago.
The 55 is a complex instrument. Double beam (and
therefore with 2
distibuted Y ampliifers). Double timebase (you cna use one for each beam,
or use one to delay the other in the typical Tektronix fashion). Double
EHT supples. Even double boxes (the PSU is a separate unit).
Oh, and even the heater supply to most of the valves is regualted, by a
circuit that takes into account the RMS value of the waveform.
Glorious.
-Dave
--
Dave McGuire
Port Charlotte, FL