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If you add 30 - 50cms of 50 ohm coax between the avalanche transistor collector and ground you will get a nice flat top pulse with duration twice the transit time of the coax. It does make the

That's one of the first things I tried. Only leads to an approximately 1.5" diameter, washed out spot slightly to the left and up from screen center. Wolfgang

That's not rise time you're seeing or "measuring", it's more like slew rate and what looks like the amplitude of the pulse really isn't. Rise time is measured between two *stable levels* (usually,

See the note on page 10 of the operations manual regarding conditioning of the storage CRT if it has been turned off for two weeks or more. Craig

On Fri, Nov 23, 2018 at 09:35 AM, Wolfgang Schraml wrote: > > On Tue, Nov 13, 2018 at 07:31 PM, Chuck Harris wrote: > > > > > I had a consulting contract years ago to help a > > Swedish company with

On Sat, Nov 24, 2018 at 03:56 AM, tom jobe wrote: > > What you are seeing on your 577 with these settings is as good as > anything I have ever seen on my 577. The different behavior with >

Or an A6902 isolation amplifier, which will take dual channel measurements from DC to 20MHz at up to +/- 3000V relative to ground. http://w140.com/tekwiki/wiki/A6902 Craig

Or you could use a Tek A6901 Ground Isolation Monitor. That measures the difference between input and output grounds, and if it exceeds +/-40V peak or the ground leakage exceeds 0.5, 3.5 or 5mA, it

I just looked at the qservice site and available the original $ 3 I order it immediately thanks for the information and help Roberto

Thanks I do not know the manual only shows two codes of the diode cd12676 or fd3375 I do not know if diode 1n4148 could be fine on and found ebay seems to me too high tax price for a diode

The isolation transformer adds the second isolation to make it double insulated. Either way there always need to be two means of protection against accidental contact, for example basic insulation and

What you are seeing on your 577 with these settings is as good as anything I have ever seen on my 577. The different behavior with different amount of steps is very normal too. Depending on settings

Roberto...does it have to be a special Tektronix diode?....if not replaceable by some commoner one Dinos in Greece may have them....(qservice-electronics in Rhodes) Dennis Tillman recently put

Removing an earth does not make anything doubly insulated unless it already was doubly earthed . Earthing the case of an isolating transformer is not the same as connecting it to the chassis of the

hello to all my usual problem with tektronix 475 in the power supply voltages since now: 50v 33 v 50v to reg 67 105-160v 132 + 15v 5.53 5v 3.25 -15v -8..8 -8v -5.12 110 v 86.4 v Fixed the problem

Chapter and verse about isolation transformer configurations here https://www.middleatlantic.com/resources/white-papers.aspx And here, towards the end https:/

hello all groups I have to replace it in my oscilloscope tek475 part TEKTRONIX 152-0246-00 DIODE SILICON 400piv 200 ma , cd12676 help me Roberto

Thanks, Egge Siert. I found the manual and in fact useful schematic to use this floating connector. .

OK. I uploaded another series of pictures. Same folder: /g/TekScopes/album?id=79121 I used a different 2N3055 than in the previous pictures. Settings: - Vertical: 50mA/Div -

On Fri, Nov 23, 2018 at 05:11 PM, Chuck Harris wrote: > > I have to wonder what were your settings for H Voltage, and > V Current, Supply voltage and load impedance, and your step size. > > You can