I found these resources today while trawling for a .pdf manual for my Eico 250 VTVM:
https://www.worldradiohistory.com/Archi ... o-1974.pdf
https://www.kevinchant.com
mnem
Interesting findings on the internet
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Use tags for the type of equipment your topic is about. Include the "repairs" tag, too, when appropriate. If a new tag is needed, request one in the TEAdministration forum.
Use tags for the type of equipment your topic is about. Include the "repairs" tag, too, when appropriate. If a new tag is needed, request one in the TEAdministration forum.
Re: Interesting findings on the internet
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Re: Interesting findings on the internet
EICO was a most worthy competitor to Heath. Sadly they went the way of the dodo too. 
Edit...EICO also sold audio kits but I don't see them in that catalog. Perhaps it was a separate catalog. I do have an EICO catalog somewhere in my stash along with dozens of Heathkit catalogs.
Edit...EICO also sold audio kits but I don't see them in that catalog. Perhaps it was a separate catalog. I do have an EICO catalog somewhere in my stash along with dozens of Heathkit catalogs.
An old gray beard with an attitude. I don't bite.....sometimes 
Re: Interesting findings on the internet
I always thought EICO was a lesser manufacturer of TE, not a kit company. We don't see EICO much this side of the pond. Heathkit/Daystrom was well established here and they had a factory in Gloucester. Heathkit turns up regularly at swapmeets here. I have a few units; a VTVM, a distortion meter and an audio wattmeter. There were a few other companies of that sort. Jason and Knight come to mind. Those sort of companies, like electronics shops aimed at hobbyists and hams, were things of a particular era.
Re: Interesting findings on the internet
We are used to fast transistors switching in ps. Now we have to get used to switching in as, attoseconds, 10-18s.
Yup, forget GHz, forget THz, this is PHz territory.
...demonstrating a current on/off switching effect on a ~630 attosecond scale (~1.6 petahertz speed)...
https://www.planetanalog.com/attosecond ... switching/
Yup, forget GHz, forget THz, this is PHz territory.
...demonstrating a current on/off switching effect on a ~630 attosecond scale (~1.6 petahertz speed)...
https://www.planetanalog.com/attosecond ... switching/
Re: Interesting findings on the internet
The falls and rise of IC and component exports per country since 1980.
Siglent Distributor NZ, TE Enabler
Re: Interesting findings on the internet
At last, some interesting uses for smartphone... physics experiments using the phone sensors. https://phyphox.org/ One example is a chirped sonar. Another is using the accelerometer to see heart rate.
It also shows raw sensor readings, e.g. number of GPS satellites and horizontal/vertical accuracy 6m/19m with 5 satellites, 2m/10m with 20 satellites.
It also shows raw sensor readings, e.g. number of GPS satellites and horizontal/vertical accuracy 6m/19m with 5 satellites, 2m/10m with 20 satellites.
Re: Interesting findings on the internet
https://archive.org/details/isaac-asimo ... volume-one
2 Giggibachis, 24 hours, All of Asimov's Robot Stories in one audiobook.
mnem
should keep me off the street & out of trouble for a while...
2 Giggibachis, 24 hours, All of Asimov's Robot Stories in one audiobook.
mnem
should keep me off the street & out of trouble for a while...
You do not have the required permissions to view the files attached to this post.
Re: Interesting findings on the internet
Got an open container of IPA at home? If you see any white crystals in it, gently put it down, run away, and call the bomb squad....
https://www.sciencedirect.com/science/a ... 0924000754
https://www.sciencedirect.com/science/a ... 1225000347
https://pubs.acs.org/doi/10.1021/acs.op ... 12?ref=PDF paywalled, but the abstract is sufficient
You may already have seen that on the HPAK group https://groups.io/g/HP-Agilent-Keysight ... age/153895
https://www.sciencedirect.com/science/a ... 0924000754
https://www.sciencedirect.com/science/a ... 1225000347
https://pubs.acs.org/doi/10.1021/acs.op ... 12?ref=PDF paywalled, but the abstract is sufficient
You may already have seen that on the HPAK group https://groups.io/g/HP-Agilent-Keysight ... age/153895
Re: Interesting findings on the internet
tggzzz wrote: ↑Fri Sep 19, 2025 7:55 am Got an open container of IPA at home? If you see any white crystals in it, gently put it down, run away, and call the bomb squad....
https://www.sciencedirect.com/science/a ... 0924000754
https://www.sciencedirect.com/science/a ... 1225000347
https://pubs.acs.org/doi/10.1021/acs.op ... 12?ref=PDF paywalled, but the abstract is sufficient
You may already have seen that on the HPAK group https://groups.io/g/HP-Agilent-Keysight ... age/153895
mnem
who you gonna call...?
Re: Interesting findings on the internet
Mesmerising Game of Life on steroids. https://www.sagejenson.com/36points/
Use control panel dropdown on the top right to choose from 40 examples, and diddle the parameters. I rather like "growing on a sea of sand".
Some patterns take 30s to settle down, and unsurprisingly the starting point can be significant.
Explanations:
https://bleuje.com/physarum-explanation/
https://github.com/Bleuje/interactive-p ... me-ov-file
Use control panel dropdown on the top right to choose from 40 examples, and diddle the parameters. I rather like "growing on a sea of sand".
Some patterns take 30s to settle down, and unsurprisingly the starting point can be significant.
Explanations:
https://bleuje.com/physarum-explanation/
https://github.com/Bleuje/interactive-p ... me-ov-file