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Ancient refrigerators

How did they make ice, in the days before electricity? And did they figure it out empirically, prior to the development...
5 comments posted 5yrs
posted by rdelaney2001
5 comments posted 5yrs posted by rdelaney2001

Power Routing Switch

Working on a gadget that uses a 12 volt motor (10 amp peak) and misc electr onics running on lower voltages. It is powe...
0 comments posted 5yrs
posted by gnuarm.deletethisbit
0 comments posted 5yrs posted by gnuarm.deletethisbit

warm air

A nearby college includes a building, surrounded by an outdoor arcade, at street level. At one point, the warm internal...
2 comments posted 5yrs
posted by rdelaney2001
2 comments posted 5yrs posted by rdelaney2001

C.Crane radio antenna problem

Hi, I have a C.Crane Witness + Radio. It has a tivo-like function and can record broadcasts to mp3 files on an SD card....
1 comments posted 5yrs
posted by itchyneebanshee
1 comments posted 5yrs posted by itchyneebanshee

Lime skates

I looked at one of those Lime electric skateboards. It has a QR code sticker, and no other user interface, that I notic...
1 comments posted 6yrs
posted by rdelaney2001
1 comments posted 6yrs posted by rdelaney2001

Rhode & Schwarz - Website Down?

Hello, all. I haven't been able to access the subject's website for 2 weeks now. Assuming the problem isn't on my end w...
3 comments posted 6yrs
posted by arl_123234
3 comments posted 6yrs posted by arl_123234

Control a VFD via cDAQ 9178

I want to control a Delta VFD ( https://famaga.ch/catalog/delta/order-267889 ) unit through the cDAQ-9178. I got an ana...
0 comments posted 6yrs
posted by indigoer
0 comments posted 6yrs posted by indigoer

IBM Selectric typewriter

I have two cycle wheels for the IBM Selectric typewriter.
1 comments posted 7yrs
posted by jon.giffen21
1 comments posted 7yrs posted by jon.giffen21

black light

I saw a pocket flashlight in a hardware store yesterday, it shines UV. Such a package is new to me. What is it good for...
6 comments posted 7yrs
posted by rdelaney2001
6 comments posted 7yrs posted by rdelaney2001

defibrillators

How does a defibrillator work, what's inside? And how does it affect the body, ameliorate a heart attack? Hoping there's...
1 comments posted 7yrs
posted by rdelaney2001
1 comments posted 7yrs posted by rdelaney2001

IC test clip with LEDs

I remember years ago seeing a clip that would fit over an IC and show the logic state of each pin on an LED (or an LED...
8 comments posted 8yrs
posted by james.harris.1
8 comments posted 8yrs posted by james.harris.1

Power a test TTL circuit from USB?

Having not touched any of this kind of stuff for years I'm looking to power a small TTL test circuit which I intend to...
13 comments posted 8yrs
posted by james.harris.1
13 comments posted 8yrs posted by james.harris.1

cassette conversion

I have a box of old cassettes in the attic (like a million other blokes). Rather than consigning them to the dust bin,...
2 comments posted 8yrs
posted by rdelaney2001
2 comments posted 8yrs posted by rdelaney2001

search help needed

I am having trouble finding the user/service manual for the Panasonic KX-TGA641 wireless phone. I need to re-activate th...
0 comments posted 8yrs
posted by jon.giffen21
0 comments posted 8yrs posted by jon.giffen21