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Overview (Passive EHT Indicator)
Principal Design goals:
-To accurately measure 'floating' (i.e. non-ground referenced) DC EMFs to 100kV. (Zin=800MΩ).
-To accurately measure positive or negative ground referenced DC EMFs to 75kV. (Zin =400MΩ).
-To achieve stable readings via: Grounding of...
Yesterday, I was browsing old technical manuals on the internet when I came across the book that changed my whole life. I was eleven years old in 1949 and an avid sci-fi reader, inspired by the writings of Jules Verne and H.G. Wells. I regularly raided my father's private bookshelves to read...
Firstly, a visual comparison ('Real Fed' vs. 'Mini-Fed'):
And now a minute 'exploration' of bona fide Federal Standard Connectors...
Beginning with 3 external views of an 'unadorned' well:
And an interior view -- Note the keyway (annotated):
Well-flange hardware:
Hardware fully...
When shopping for a new scope a lot of things need to be considered: what bandwidth do I need? what sample rate and sample memory is required? Do I need additional functionality like serial decoding, or an MSO? Do I need active probing? And so on.
However, there is one recommendation that...
Dropping resistors
Resistor tower spacers
Semi-prepped dropping resistor
Fully prepped dropping resistor
Dropping resistor tower sleeves
Lower tower end-caps (outside) view
Lower tower end-caps (inside view)
Upper tower end-caps (outside view)
Upper tower end-caps (inside...
Editor's note: The following offered with grateful acknowledgement to AAC member @shortbus.
Provided (although simple and very easy for anyone to come up with on his'/her' own) just because I haven't spotted such in www nor in literature...
The following utilizes two types of counter cells to make a 4-bit binary and a 4-bit BCD counter.
[End of this post]
We designed this small project four years ago to create a fiber optic RS-232 communications channel in the form factor of a sizeable USB flash drive. From the schematic diagram below, this is obviously a very easy, very simple interface as-is, though the remote device with which the computer is...
Any quantity that has two components, can be represented in at least two different ways:
Rectangular Coordinates, where the magnitude of the components, can be represented by a point, with respect to a pair of orthogonal coordinate axes.
Polar Coordinates, where the two components are the...
