tia
@tia@lemmy.world
- Comment on What's the best way to add a battery like device to a dynamo light 1 month ago:
Your solution may very well also work, good thinking. A few things to consider though:
- Putting capacitors in series requires balancing them
- A silicon full bridge rectifier drops ~1.4V frm the input
- Incandecent bulbs require a lot of current to get going, this may result in a delay for them to turn on
- Comment on Has anyone ever seen a "10A" USB-C cable and can tell what their purpose is? 1 month ago:
Haha pretty much
- Comment on Has anyone ever seen a "10A" USB-C cable and can tell what their purpose is? 1 month ago:
Interesting approach, never thought about using the cable for something completely unrelated.
- Comment on Has anyone ever seen a "10A" USB-C cable and can tell what their purpose is? 1 month ago:
Thanks, that’s pretty much exactly what I found: en.wikipedia.org/wiki/USB_hardware#Allowable_curr…
- Submitted 1 month ago to technology@lemmy.world | 17 comments
- Comment on What's the best way to add a battery like device to a dynamo light 1 month ago:
I’ve actually done that with a simple single diode rectifier and a supercap with zener voltage limitation:
If your supercap has a too low series resistance for the LED to light immediately you need an additional resistor in series with it. It is simple and small enough to directly fit inside the original lamp casing and has been working without a problem for over 3 years.
- Comment on Some basic info about USB 2 months ago:
The USB-C standard and particularly the USB PD (power delivery) is so complex it almost feels comical.
The PD standard document (freely available on usb.org) is over 800 pages long and features a lengthy part about the role of the cable alone which is mostly hidden from the user. Here’s a short video about this issue: www.youtube.com/watch?v=6bZ0y9G-4Pc
- Comment on There is a lot of variance in regular USB-C cables 3 months ago:
That’s true, they explain this in a different video: www.youtube.com/watch?v=y9vXDy_zt4I
- Comment on There is a lot of variance in regular USB-C cables 3 months ago:
Yeah, it’s not really getting easier…
- Submitted 3 months ago to technology@lemmy.world | 11 comments
- Submitted 4 months ago to technology@lemmy.world | 6 comments
