: [time-nuts] Dead 5061B
Jim
Is there any hope. I would believe so. CS tubes are pretty tough. As Scott
says HV supplies but you measured those and they appear good as you say. So
its a knock down drag out battle. You have nothing to loose so dig in.
I wonder if the SRD may have popped. But its funny
Its a hot wire ionizer (I know thats the name.) so its a heater more then a
cathode. But in reality its goal is to filter CS atoms. That is it directs
one state of the CS stream that did not flip from the microwave interaction
to the getter and the other that did to the collector and detector.
Jim,
The filament is a hot wire ionizer that functions to ionize the atoms in
the beam so that the mass spectrometer will be able to steer them to the
electron multiplier. It is a thin ribbon and not likely to be reattached
once it burns open.
Cheers,
Corby
On 11/8/19 2:25 PM, paul swed wrote:
Hello to the group.
A few years back Skip took apart a 5061 CS tube. Took the best pictures
with detail that has ever been posted. I really learned about the internal
details from his effort.
Tom kindly found the links re-posted here.
Hello to the group.
A few years back Skip took apart a 5061 CS tube. Took the best pictures
with detail that has ever been posted. I really learned about the internal
details from his effort.
Tom kindly found the links re-posted here.
Yes it’s terminal sorry
On Tue, Nov 5, 2019 at 1:05 AM ed breya wrote:
> Yes, I've heard of this method before. It may help to study the internal
> structure of the filament and its support, and orient the tube to get
> some gravity assistance while trying the procedure. I recall that
> someone
Yes, I've heard of this method before. It may help to study the internal
structure of the filament and its support, and orient the tube to get
some gravity assistance while trying the procedure. I recall that
someone here put up a nice pictorial of the innards of a shot, dissected
Cs beam tube
Time Nuts-
Thanks to John, Corby, Skip and anyone else I missed who offered help.
John got it in one. The hot wire ionizer is open, as measured at the D
connector coming out of the tube. I understand that this is a terminal
condition. Too bad for me.
BTW, I found this note on
I would look at ionizer and Ionizer circuit. In the past I would see ion
current increase when ionizer turned on.
Bert Kehren
In a message dated 11/3/2019 11:40:03 PM Eastern Standard Time,
paulsw...@gmail.com writes:
Jim
Is there any hope. I would believe so. CS tubes are pretty tough. As
I had a 5061A that had those symptoms. It had been running in Cs off mode
for a long time and the Ion Pump current looked like zero on casual
inspection but was actually barely perceptibly just off the zero mark. I
took that to mean that the ion pump had kept the vacuum in the tube very
well. The
> This 5061B was working fine until a recent power failure, after which the
unit
> would not come on line (alarm light stayed lit).
>
> Major symptoms now...
Have you checked the continuity of the hot-wire ionizer? It may have opened
up like a light bulb filament when the power came back on.
Jim
Is there any hope. I would believe so. CS tubes are pretty tough. As Scott
says HV supplies but you measured those and they appear good as you say. So
its a knock down drag out battle. You have nothing to loose so dig in.
I wonder if the SRD may have popped. But its funny the ion pump is 0.
Have you checked the HV supplies?
Content by Scott
Typos by Siri
> On Nov 3, 2019, at 2:04 PM, AC0XU (Jim) wrote:
>
Time Nuts-
This 5061B was working fine until a recent power failure, after which the unit
would not come on line (alarm light stayed lit).
Major symptoms now:
Beam I ;
Time Nuts-
This 5061B was working fine until a recent power failure, after which the unit
would not come on line (alarm light stayed lit).
Major symptoms now:
Beam I ; Second Harmonic; Ion Pump Supply are all 0 on front panel. All
other front panel readings are normal. (except for
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