How to powered this LED properly?? I salvage this from broken emergency lamp..1yr ⋅ lema_conductor ⋅ r/AskElectronics
My solder keeps doing this when I try to solder, it just balls up at the tip of the solder wire and falls off after momentarily melting and then quickly solidifying. Any suggestions?3yr ⋅ Thecactusslayer ⋅ r/AskElectronics
What is the best way to jump/extend a USB-C port onto a daughter board?2yr ⋅ Ayame__ ⋅ r/AskElectronics
I have this CPU on an laptop and don’t have a clue how to remove it, It’s an AMD Athlon 19996mo ⋅ PizzaMARUJAN ⋅ r/AskElectronics
I want to use this iron but all I can find is 5 pin stations. Could someone help me find a good station to accept this 7 pin?3yr ⋅ CowardVenus15 ⋅ r/AskElectronics
Repurposing old calculator displays, can it be done with arduino or similar?3yr ⋅ bennrr ⋅ r/AskElectronics
Managed to snap a piece off the PCB in my phone. How would I go about reattaching it?1yr ⋅ honey-bees-knees ⋅ r/AskElectronics
What are some reasons why there would be traces taking such a wierd path...?4yr ⋅ binarycow ⋅ r/AskElectronics
I just saw this power supply design in a door controller from 1989. Never seen it before. It is working, but how's that even supposed to work? There is no zener resistor, won't it burn up?1yr ⋅ gurksallad ⋅ r/AskElectronics
What is the coil of wires labeled TR1 and TR2? Is there a specific name for this component?1yr ⋅ Jayddubz ⋅ r/AskElectronics
Does the second row have any significance in finding a replacement?TIA4mo ⋅ Sand-Alone ⋅ r/AskElectronics
Every resistor is 30 ohms. How do I calculate the equivalent resistance?3yr ⋅ smurfgo5 ⋅ r/AskElectronics
Is it normal for a circuit board transformer to have orange liquid-looking stuff that is completely solid?1yr ⋅ Shock_a_lot ⋅ r/AskElectronics
Working on a pinball machine from 1937. This unidentified component started smoking. What is it?9mo ⋅ b25mitch ⋅ r/AskElectronics
Total noob question: what is the total resistance of this series circuit?1yr ⋅ Ike_hike ⋅ r/AskElectronics
What hardware would I need to power an arduino uno off of this power supply?3yr ⋅ Smurtknurkler ⋅ r/AskElectronics
Will this work safely? New to circuits/electronics other than following a guide.1yr ⋅ Lootcurse ⋅ r/AskElectronics
Tore down my broken ps3 fat and found this. Is this why it’s not running, and how can I fix it?1yr ⋅ AggravatingBox2421 ⋅ r/AskElectronics
Does the computing power of some of these cheap Bluetooth speakers freak anyone else out?2yr ⋅ SativaSawdust ⋅ r/AskElectronics
I had a capacitor's innards become its outards on a CD Player. I'm having trouble cleaning this off of the board so I can replace the cap, advice for getting this off?1yr ⋅ DoctorWhoniverse ⋅ r/AskElectronics
Prototyped an analog electronic load... how do you all keep projects clean and tidy? I can’t seem to ever build an enclosure for projects and they they just rot away..... curious as your thoughts on keeping clean and making project enclosures!3yr ⋅ Positive_Ad_5051 ⋅ r/AskElectronics
Anyone ever cut their pi? I want to saw off the header side of the board2yr ⋅ nomoreimfull ⋅ r/AskElectronics
A while ago i was in a scrapyard with a friend and we found two of those oscilloscopes, we bought both for 9$, i kept one and he kept the other one, this is my first one, is it good for beginners? It's in this bag because i will clean it later, it has some minor damage but works fine3yr ⋅ dontreadthisnickname ⋅ r/AskElectronics
This is an old garage door remote module that cuts in and out because Im guessing these have worked free. I have done absolutely zero electric repairs. What’s the easiest way to reconnect these ?2yr ⋅ Waffletop52 ⋅ r/AskElectronics
Making a Marx generator and looking for any advice before I go for it.11mo ⋅ DIYEngineeringTx ⋅ r/AskElectronics
Got these capacitors from a 90's forklift battery charger. They sound like there are liquid inside. Why? Any not too deadly things to use them for?3yr ⋅ abagofcells ⋅ r/AskElectronics
Never seen this component before. What is it? (bottom left, designator P1)3yr ⋅ gurksallad ⋅ r/AskElectronics
I'm new to ICs and can't get a simple flip flop circuit to work. What am I doing wrong?1yr ⋅ limping_bear ⋅ r/AskElectronics
Led flasher works but I’d like to replace the pot with a fixed resister.4yr ⋅ D4rkStr4wberry ⋅ r/AskElectronics
How does the current limit work in this power supply schematic? I can't figure out how it senses the current.2yr ⋅ mud_tug ⋅ r/AskElectronics
how can i recognize this diode? is it germanium possibly? found on a cb radio1yr ⋅ AideGloomy1638 ⋅ r/AskElectronics
I was told to replace a blown up SMD (the yellow one) with Resistor 0R Jumper 2A 1206.1yr ⋅ AlanGeisse ⋅ r/AskElectronics
[Help] TV PSU : Power Surge : I'm not a complete noob (far from expert), but I know how to use a multimeter & how to solder. How can I diagnose if I need a new board, if I can just repair some components? Any tips, will be highly appreciated.1yr ⋅ hbarcellos ⋅ r/AskElectronics
Anyone got a viable solution for removing a foreign object from inside a female BNC socket?3yr ⋅ demux4555 ⋅ r/AskElectronics
Currently trying to find information on this IC. I have searched for 3 days with no luck thus far.3yr ⋅ digitaldowns ⋅ r/AskElectronics
Which of these dots is the pin 1 marker? Chip is an STM32F407 in a LQFP144 package.3yr ⋅ electrotwelve ⋅ r/AskElectronics
Why on gamepads and other such membrane switch devices, are some of the contacts for the membrane switch to bridge shaped differently?2yr ⋅ Fun_Communication143 ⋅ r/AskElectronics
Need help understanding the basics of how an oscilloscope displays waves. This reading is from a 2.45ghz wave. What aspect of the wave is being displayed?2yr ⋅ bignuts771 ⋅ r/AskElectronics
Capacitor Question: I need help identifying this Capacitor. An hour researching still left me confused.3mo ⋅ Marksman79 ⋅ r/AskElectronics
Added 8gig of RAM to my laptop's 4gig, and accidentally removed what I think is a surface-mounted capacitor. Laptop detects 12gig of memory though and is much faster. Should I be worried?3yr ⋅ boywithsilverlining ⋅ r/AskElectronics
It's the back of my graphics card. Were these components soldered by hand during assembly? They look weirdly uneven for something that a machine built.1yr ⋅ scheisskopf53 ⋅ r/AskElectronics
Is it possible to reduce this drawing down to one equivalent resistor?2yr ⋅ DylanMorrisJerome ⋅ r/AskElectronics
I got this strange looking transformer from an old satelite reciever, why does it have this shape?3yr ⋅ szevlin ⋅ r/AskElectronics
Why do some EMI shields have zero holes, while others have just one hole, while another has holes like cheesegrater?3yr ⋅ rosmianto ⋅ r/AskElectronics
What is this component called? It is used as a volume controller on a keyboard.2yr ⋅ ACMEBugs ⋅ r/AskElectronics
This is a TV that was in a flood. For some mystical reason, it still works. What are the risks of using it and is it worth cleaning?1wk ⋅ Janjao_do_225 ⋅ r/AskElectronics
Can I just Solder an old graphic chip to a Laptop mainboard for increased graphic performance?1yr ⋅ Connect-Mud-8562 ⋅ r/AskElectronics
What does “MF” mean? Is it the same as uF? This is from a service manual for an old Sony PVM monitor1yr ⋅ nicoleole80 ⋅ r/AskElectronics
What are those big grey resistors in the voltage divider called? Also, any color code calculator for them, normal doesn't work.3yr ⋅ Cedrik4995 ⋅ r/AskElectronics
What is happening here? 140V AC for a battery-opperated LED string?? It shocked me a little when I touched the output.2yr ⋅ AndreiGamer07 ⋅ r/AskElectronics
According to the colour code on the circled resistors, they should read 1k Ohms on the multimeter, but all of them read around 235 Ohms. All the other resistors measure correctly. Am I colour blind, or could another component be effecting the resistance value? Thanks.2yr ⋅ Two-Pack-Shaker ⋅ r/AskElectronics
This isn't a question, but a cautionary tale. Read the datasheets and part numbers carefully. ST decided to change the pinout of an ic and only change the part name one letter. VND5050J-E to VND5050AJ-E. Now we have 200 boards that need some very tricky rework.4yr ⋅ mkrjoe ⋅ r/AskElectronics
What are these circular things I found in an old radio? There were three1yr ⋅ reportcrosspost ⋅ r/AskElectronics
Do the 2 VCC pins on a USB C receptacle (highlighted in red) have to be connected? I am designing a highly compact pcb and one of the traces cannot be run with the trace bridging the 2 VCC pins in the way.1yr ⋅ Emufasar ⋅ r/AskElectronics
Tell it to me straight, doc. How realistic is this mini-HDMI SMD repair for a shaky-handed amateur?3yr ⋅ dowath ⋅ r/AskElectronics
How much we wanna bet that is PCB oil coming out of that capacitor in a 57 year old power supply?5mo ⋅ TheRealFailtester ⋅ r/AskElectronics
My TV died the other day and I think this fuse is to blame. Why is it put in so securely compared to other fuses on the same board? Also, how do you suggest replacing it without braking the connectors???3yr ⋅ Chemhead ⋅ r/AskElectronics
Trying to fix a friend's gas oven control board. Can't for the life of me figure out what this component is.9mo ⋅ PurePetrol ⋅ r/AskElectronics
Just ordered a small microcontroller but some of the pins came bent. Is this an issue? How could I fix this? Also I am very new to this so sorry if this a complete noob question3yr ⋅ 65neverusedatoilet ⋅ r/AskElectronics
I got an old Philips PM3230 oscilloscope but some of the plastic knobs have broken. Does anywhere still make them?1yr ⋅ reportcrosspost ⋅ r/AskElectronics
Could anyone help me identify this part? (No identification on it)2yr ⋅ Thepurpledoor ⋅ r/AskElectronics
I just made an inverter. I can turn on led bulbs no problem but if i try charging my phone the charger just turns on and off fastly. I used a transistor, if that matters.1yr ⋅ -Lord_Of_Flames- ⋅ r/AskElectronics
basic electronics for an art project--please help me build my time machine :)9mo ⋅ go_clete_go ⋅ r/AskElectronics
Thank you all so much for all your help yesterday after I soldered headers on the wrong side of the board! I ended up cutting the plastic, de-soldering the pins, then cleaning the holes with solder braid and a wooden skewer. Now I have a working oscilloscope kit!4yr ⋅ ThatAussieGeek ⋅ r/AskElectronics
Could someone please explain to me why the resistance between points A and B is 940 ohms in this circuit?1yr ⋅ DeathmasterXD ⋅ r/AskElectronics
Hey I took apart one of my old modem,but I don't know what this is1yr ⋅ Additional-Relief-76 ⋅ r/AskElectronics
I love this sub. Thanks to /u/WyvernsRest I was able to fix my sustain pedal with a mouse trap3yr ⋅ petertree ⋅ r/AskElectronics
Cap blew on this buck board when increased amp, deceased volts. From 16v/1.4a to 12v1.8a. Bigger is better? (200uf vs 100uf will safely fix?)1yr ⋅ AaronCompNetSys ⋅ r/AskElectronics
About 1/4 of submissions are from Repost bots. Mods catch most of them but, once in a while, one slips through. If you see one we missed, please click the report link.9mo ⋅ 1Davide ⋅ r/AskElectronics
I would like to 3D print a case to join these two modules : what would be the best way for wiring ?4yr ⋅ _threads ⋅ r/AskElectronics
I was practicing soldering for about half and hour, and the soldering iron was already starting to break, what do?2yr ⋅ space_out_on_life ⋅ r/AskElectronics
What are these red things on either sides of board? I opened a mosquito zapper because it stopped working.2yr ⋅ growingsomeballs69 ⋅ r/AskElectronics
I’m learning about antennas, and seeing the pic on the right in a book. The left is from a Ugly’s controls reference guide. They seem to say the same thing except they differ in their terminology “direction of current” and “flow of electrons”. What am I missing here?3yr ⋅ Robatronic ⋅ r/AskElectronics
What is the intent of this symbol? Two diodes with a third terminal connecting them?2yr ⋅ warmowed ⋅ r/AskElectronics
Would this damage be the cause of the laptop not turning on?1yr ⋅ DanishProblemChild ⋅ r/AskElectronics
Is it absolutely necessary to have two 0.1μf capacitors between Vdd and ground, or can they be combined to one capacitor with 0.2μf?1yr ⋅ AxisFlip ⋅ r/AskElectronics
Found a huge capacitor in my grandpa's old stuff. Anyone know what they are used for?1yr ⋅ antomeie ⋅ r/AskElectronics
