Hi, I have built a microvawe transformer spotwelder, I have put a single turn of welder wire for in the secondary and I’m timing it with arduino. Worth mentioning it was/is a 230V transformer. Electrodes are sharpened copper rods. I believe the voltage is still high. The spotwelds it produces are slightly discolored and not as...
I know this is just an anecdote, but I’d like to add that this is the second time this has happened to me with this model of device, and both times were after minimal usage
I have a 3D printer and have a special filter that has two 24V blower fans that are connected in parallel. Unfortunately my printer doesn’t have the proper connectors for the fans. So if I purchase something like this power jack adapter I know the adapter is 12V not sure if that would make a difference. Anyway if I connect the...
I know the question is rather awkward at first and I am possibly overlooking something, but I would like to know something I really don’t understand....
I use the ReVanced version of YouTube Music (no ads, high quality music). If I find a song that I like, I download it in FLAC format from one of the sites in the megathread
Hello y’all! I’ve always been interested in computers and programming for as long as i can remember, but recently i’ve decided to try to get into some of the deeper stuff behind that, into the wonderful world of electronics. Where should I start? What courses or books or youtube series should I consume? What are some...
Hello, I did manage to kill my cheap-ish bench supply causing it to randomly output up to like 300% the set voltage when under load which did already kill one board. Probably I didn’t actively kill it but the chinesium did its job 🤷🏻♂️. It was a single output supply, when needed I hooked up additional buck- or...
Hello, I have a circuit that will need to return connected hardware to a default state if power is lost. The hardware can handle continuous voltage, so I’m thinking a simple solution would be to use a battery to provide that fallback power source. To avoid draining the battery, I’d like to connect it through a relay on the...
With your solution using a diode on each voltage source, would there be any risk of a trickle charge draining the battery unexpectedly if the battery?
Current flows from high to low voltage, but the battery is at a lower voltage than the supply. Check the diode’s datasheet for the reverse current at the voltage that would be across it. It should be negligible
Circuit is for controlling the fan on a Raspberry Pi, just on/off according to temp, no PWM. Not sure about the diode as it has a .7V drop and it’s a tiny brushless DC motor. No markings on the fan so I measured the current with a multimeter when hooking it up to a USB charger. Circuit was adapted from here using what I have...
ain't got no rizz (lemmy.ml)
no window (feddit.de)
Microvawe transformer spotwelder. Is there a way to improve it?
Hi, I have built a microvawe transformer spotwelder, I have put a single turn of welder wire for in the secondary and I’m timing it with arduino. Worth mentioning it was/is a 230V transformer. Electrodes are sharpened copper rods. I believe the voltage is still high. The spotwelds it produces are slightly discolored and not as...
Buying replacement Type C connectors (lemmy.ml)
https://lemmy.ml/pictrs/image/a627879b-c9c8-4dd2-9c5f-7ef4319ef5fd.jpeg...
Is it safe to use a laptop charger to power two parallel 24v fans?
I have a 3D printer and have a special filter that has two 24V blower fans that are connected in parallel. Unfortunately my printer doesn’t have the proper connectors for the fans. So if I purchase something like this power jack adapter I know the adapter is 12V not sure if that would make a difference. Anyway if I connect the...
Check out my AI generated movie poster of Custer's Revenge! (feddit.de)
PSA To people watching YouTube with AdBlockers
You might have noticed that even on Firefox (depending on your lists) YouTube may detect uBlock Origin on Firefox now...
For those who pirate songs, how do you discover new music?
I know the question is rather awkward at first and I am possibly overlooking something, but I would like to know something I really don’t understand....
deleted_by_moderator
How should I get started?
Hello y’all! I’ve always been interested in computers and programming for as long as i can remember, but recently i’ve decided to try to get into some of the deeper stuff behind that, into the wonderful world of electronics. Where should I start? What courses or books or youtube series should I consume? What are some...
Do AA Battery Holders - Connected in Parallel so still 1.5V - Exist?
Hello,...
deleted_by_author
Post date is in the future (lemmy.ml)
This post was apparently posted at 11:08 GMT+2, which is almost two hours in the future from now....
deleted_by_author
I need a new bench power supply
Hello, I did manage to kill my cheap-ish bench supply causing it to randomly output up to like 300% the set voltage when under load which did already kill one board. Probably I didn’t actively kill it but the chinesium did its job 🤷🏻♂️. It was a single output supply, when needed I hooked up additional buck- or...
Continuous operation of a general purpose relay?
Hello, I have a circuit that will need to return connected hardware to a default state if power is lost. The hardware can handle continuous voltage, so I’m thinking a simple solution would be to use a battery to provide that fallback power source. To avoid draining the battery, I’d like to connect it through a relay on the...
Inductively powered LED thing (discuss.tchncs.de)
Other side:...
What type of connector is this ? (discuss.tchncs.de)
//Edit: It’s a SAS drive. thanks for the help :))...
A couple of icon x the group (lemmy.world)
https://lemmy.world/pictrs/image/24d865e4-966e-416c-937d-321e4ffa3b39.pnghttps://lemmy.world/pictrs/image/d4e99546-a304-439a-b5d9-ebf6b9676eb8.pnghttps://lemmy.world/pictrs/image/d5cec647-3fb6-456b-b1fd-7b7d2059358d.png
Small fan switch sanity check. (lemmy.world)
Circuit is for controlling the fan on a Raspberry Pi, just on/off according to temp, no PWM. Not sure about the diode as it has a .7V drop and it’s a tiny brushless DC motor. No markings on the fan so I measured the current with a multimeter when hooking it up to a USB charger. Circuit was adapted from here using what I have...