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Re: 465B Horizontal Sweep help
If both deflection plates are stuck at 100V+, the problem is not likely to be the sweep, rather, the horizontal amplifier itself. A sweep problem would leave one plate high and the other low.
--
Bob
If both deflection plates are stuck at 100V+, the problem is not likely to be the sweep, rather, the horizontal amplifier itself. A sweep problem would leave one plate high and the other low.
--
Bob
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By
Bob Haas
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#185243
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Re: 500-series plugin connector (for DIY plugin or extender)
I can see that useful for making an extender cable. I wonder if there ever
were any official extender cables for the 500 series?
I can see that useful for making an extender cable. I wonder if there ever
were any official extender cables for the 500 series?
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By
David Kuhn
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#185242
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Re: Tek 7623A - Source of 151-0271-00 transistor (A5T4261) or a currently available equivalent.
Did it work?
By
Miguel Work
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#185241
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Re: 500-series plugin connector (for DIY plugin or extender)
I forgot to mention that I'm in France. Shipping outside Europe may be expensive.
Nicolas
________________________________
De : TekScopes@groups.io <TekScopes@groups.io> de la part de nicmatfr
I forgot to mention that I'm in France. Shipping outside Europe may be expensive.
Nicolas
________________________________
De : TekScopes@groups.io <TekScopes@groups.io> de la part de nicmatfr
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By
Nico F4IAN
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#185240
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Re: 500-series plugin connector (for DIY plugin or extender)
I bought a 013-019 / EP-54 plug-in extender and I found it wasn't as helpful as I thought it would be, so I was thinking of taking it apart and using the connectors to make a cable. However, I'd
I bought a 013-019 / EP-54 plug-in extender and I found it wasn't as helpful as I thought it would be, so I was thinking of taking it apart and using the connectors to make a cable. However, I'd
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By
Jonathan Pyle
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#185239
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500-series plugin connector (for DIY plugin or extender)
Hello all
Would anyone be interested in connectors for the 500-series plugins ? I have found a connector reference and a distributor in the UK but I strongly suspect they wouldn't sell me 2 pieces
Hello all
Would anyone be interested in connectors for the 500-series plugins ? I have found a connector reference and a distributor in the UK but I strongly suspect they wouldn't sell me 2 pieces
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By
Nico F4IAN
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#185238
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Re: What was the first oscilloscope to have cursors?
As the reader wrote the original question : “What was the first oscilloscope to have cursors? “ the answers were if the question was “which was the first Tek scope to have cursors?” (include
As the reader wrote the original question : “What was the first oscilloscope to have cursors? “ the answers were if the question was “which was the first Tek scope to have cursors?” (include
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By
ditter2
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#185237
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575 Bottom panel - questions, sources, etc.
Hi guys and gals,
So the 575 restoration is progressing nicely. I made it through calibration today for the first time! :-) Now I'm looking forward to the moment when I can put the cases on it and
Hi guys and gals,
So the 575 restoration is progressing nicely. I made it through calibration today for the first time! :-) Now I'm looking forward to the moment when I can put the cases on it and
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By
Keith
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#185236
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Re: Members in Australia
G'Day All from Brisbane (4306).
I have 7904, 7104, and numerous 7000 plugins (but there is always room for more ...)
Robert Dixon
G'Day All from Brisbane (4306).
I have 7904, 7104, and numerous 7000 plugins (but there is always room for more ...)
Robert Dixon
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By
Robert Dixon
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#185235
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Re: 465B Horizontal Sweep help
Also, compare the waveshape and voltages at point 91 (TP4217) with the waveform as shown in the diagram. Horizontal settings as under "AC Waveforms" above the image of point 91.
Raymond
Also, compare the waveshape and voltages at point 91 (TP4217) with the waveform as shown in the diagram. Horizontal settings as under "AC Waveforms" above the image of point 91.
Raymond
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By
Raymond Domp Frank
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#185234
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Re: 465B Horizontal Sweep help
------------
Hi Bob,
C4010 (47pF) in series with R4112 (390k) replenishes the charge on C4118 (connected to grid) at 50kHz rate. Extra 75M-ohm load should be fine.
TP93 should be a clipped sine wave
------------
Hi Bob,
C4010 (47pF) in series with R4112 (390k) replenishes the charge on C4118 (connected to grid) at 50kHz rate. Extra 75M-ohm load should be fine.
TP93 should be a clipped sine wave
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By
Ozan
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#185233
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Re: 465B Horizontal Sweep help
The resistance between the probe tip and the common connection is what counts, apparently 75 MOhm in your setup.
Raymond
The resistance between the probe tip and the common connection is what counts, apparently 75 MOhm in your setup.
Raymond
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By
Raymond Domp Frank
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#185232
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Re: 5B12N Op Manual Rework
Dennis:
Will you scrub this thread please.
It shouldn't be here in the first place and having provided valid, lowest
cost freight quotes WEEKS ago I'm about to lose my temper.
So, for the third and
Dennis:
Will you scrub this thread please.
It shouldn't be here in the first place and having provided valid, lowest
cost freight quotes WEEKS ago I'm about to lose my temper.
So, for the third and
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By
Liam Perkins <hifi@...>
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#185231
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Re: 465B Horizontal Sweep help
The HV meter I am using is a Fluke 27 kit that came with a 6KV HV (80k-6) probe adapter. According to the Fluke website the probe has 1000:1 75Mohm resistance for use with a 10Mohm meter. I didn't
The HV meter I am using is a Fluke 27 kit that came with a 6KV HV (80k-6) probe adapter. According to the Fluke website the probe has 1000:1 75Mohm resistance for use with a 10Mohm meter. I didn't
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By
Robert Simpson
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#185230
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Re: 5B12N Op Manual Rework
You haven't replied off list. Reply off or on list, I don't care
which, but after you've disappeared for two months, I don't want you
to disappear for another two.
You haven't replied off list. Reply off or on list, I don't care
which, but after you've disappeared for two months, I don't want you
to disappear for another two.
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By
cheater cheater
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#185229
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Re: 5B12N Op Manual Rework
On list is not the place.
telus.net@groups.io> wrote:
On list is not the place.
telus.net@groups.io> wrote:
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By
Liam Perkins <hifi@...>
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#185228
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Re: 5B12N Op Manual Rework
Liam,
I've asked you a week ago to check with UPS.
You haven't replied about this since. You just kept on rushing me to
pay for the courier you chose. I asked you to look up another one and
you
Liam,
I've asked you a week ago to check with UPS.
You haven't replied about this since. You just kept on rushing me to
pay for the courier you chose. I asked you to look up another one and
you
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By
cheater cheater
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#185227
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Re: 465B Horizontal Sweep help
Thanks for your comments, Ozan. My component references were for the 465 whereas Robert's is a 465B, sorry about that.
As regards the -2500V: Of course, you're right, hardly any standard DVM (e.g.
Thanks for your comments, Ozan. My component references were for the 465 whereas Robert's is a 465B, sorry about that.
As regards the -2500V: Of course, you're right, hardly any standard DVM (e.g.
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By
Raymond Domp Frank
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#185226
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Re: 5B12N Op Manual Rework
No you didn't, you paid for Canada Post on the 3567A already received in
good order.
You paid $US50.00 against a shipment cost of $US100.00 by Surface Mail or
$US150.00 by Airmail .
On-list is not the
No you didn't, you paid for Canada Post on the 3567A already received in
good order.
You paid $US50.00 against a shipment cost of $US100.00 by Surface Mail or
$US150.00 by Airmail .
On-list is not the
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By
Liam Perkins <hifi@...>
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#185225
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Re: 465B Horizontal Sweep help
To add to Raymond's comments:
Amount of negative bias depends on the voltage swing at TP93. Higher the swing at TP93, dimmer is the beam. The swing at TP93 is set by two diode clamps: CR4111 and
To add to Raymond's comments:
Amount of negative bias depends on the voltage swing at TP93. Higher the swing at TP93, dimmer is the beam. The swing at TP93 is set by two diode clamps: CR4111 and
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By
Ozan
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#185224
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