Home
Help
Search
Login
Register1
Test Equipment / Re: DER-EE DE-5000 ESR zero measurement problem.
« Last post by TA3UIS on Today at 04:25:25 pm »Is there a sure way to tell if this is not a problem with the DE-5000?
Recent Posts
2
Test Equipment / Re: 3.5kV power supply teardown
« Last post by Gulftown on Today at 04:23:16 pm »That looks like a part of the output plug?
I swapped them to standard 4 mm banana jacks.
Except for the binding posts, you can buy more or less any electrical replacement part for this supply at mouser or digikey.
I swapped them to standard 4 mm banana jacks.
Except for the binding posts, you can buy more or less any electrical replacement part for this supply at mouser or digikey.
3
Test Equipment / Re: Looking for a replacement general purpose oscilloscope for home use
« Last post by Kosmic on Today at 04:20:37 pm »I doubt you'll get rid of the calibration. It is something Lecroys do. I'm on the most recent version for my Wavepro 7k series and it auto-calibrates whenever it wants. It seems to be temperature dependant though. So after a while the calibrations are less frequent. Annoying but I don't use the Wavepro as my daily driver scope so I can live with it.
On the 7300a you can slow down calibration and disable temperature related calibration. I guess this is not available on all models.
4
General Technical Chat / Re: Model Trains
« Last post by joeqsmith on Today at 04:19:40 pm »Much newer plastic design from the 70s. I don't recall how I melted it, but it doesn't look like a soldering iron mishap. My trains had a rough life....
5
Repair / Re: unknown DC-DC chip of SI-9110 differential probe
« Last post by fzabkar on Today at 04:18:40 pm »6
Buy/Sell/Wanted / WTB Gossen Metrawatt M230B METRAHit 30M
« Last post by coromonadalix on Today at 04:15:05 pm »If by miracle someone want to sell an clean unit, who'll be greatly taken care of and be put and kept with other Gossens units i have ...
PM Me we'll negotiate
thks
PM Me we'll negotiate
thks
7
3D printing / Re: Resize a STL File For Me
« Last post by MarkF on Today at 04:13:51 pm »Not sure that I've figured out how version 0.16 is working.
However if you draw a cylinder around the z-axis as in the video.
Select the top cylinder end face as the reference to create the reference sketch (as the video).
Draw a square with two edges on each of the x-axis and y-axis in the positive direction.
Pad the reference square to a cube.
(Basically, make the little rectangle and pad in the video into a cube for more clarity.)
Now you have a cube which you can use to reference any of the faces in order
to create your cutting pattern. The revolve then allows you to rotate the cutting pattern
in either the horizontal or vertical directions.
Clear as mud??? For me too.
To answer an earlier question, you can't delete this reference cube because that would
break the draw path used to update the part. You can only add a cut of the cube at the
trailing end of the operations.
However if you draw a cylinder around the z-axis as in the video.
Select the top cylinder end face as the reference to create the reference sketch (as the video).
Draw a square with two edges on each of the x-axis and y-axis in the positive direction.
Pad the reference square to a cube.
(Basically, make the little rectangle and pad in the video into a cube for more clarity.)
Now you have a cube which you can use to reference any of the faces in order
to create your cutting pattern. The revolve then allows you to rotate the cutting pattern
in either the horizontal or vertical directions.
Clear as mud??? For me too.
To answer an earlier question, you can't delete this reference cube because that would
break the draw path used to update the part. You can only add a cut of the cube at the
trailing end of the operations.
8
Metrology / Re: Remote controlled DMM DCV INL tester based on voltage divider idea
« Last post by CurtisSeizert on Today at 04:13:26 pm »I finished layout and assembled a board for the DAC + single ratio version. I wanted to get my money's worth for the LTZ1000A and DAC11001B I used, so I added a Howland-type current source with four ranges and a fourth order Butterworth for an AWG on separate outputs. Those are on switched rails to minimize power consumption and heat dissipation. I am hoping to get the firmware to a point where I can test it with my 3458 in a week or so, but I expect I'll need to run it for a month or so to get the LTZ1000 stable enough for optimal results.
9
Projects, Designs, and Technical Stuff / Re: FU-Dyson-BMS - An (Unofficial) Firmware Upgrade for Dyson V6/V7 Vacuum BMS
« Last post by sukiyakh on Today at 04:09:35 pm »Thank you. Thank you very much for your help. I saw the file you sent. Thank you very much.
10
Test Equipment / Re: DER-EE DE-5000 ESR zero measurement problem.
« Last post by TA3UIS on Today at 04:08:57 pm »It gives no value at 1KHz.