Is there any reason to leave copper around screw mounting holes even when they are not connected to ground?1wk ⋅ Raioc2436 ⋅ r/AskElectronics
Found a huge capacitor in my grandpa's old stuff. Anyone know what they are used for?1yr ⋅ antomeie ⋅ r/AskElectronics
Can I protect a transistor from inductive kickback in these examples?5mo ⋅ newlife_newaccount ⋅ r/AskElectronics
Hello. This is a logitech g920 shifter port. I was wondering what that black ring is and what is it's purpose.2yr ⋅ mysterkriause ⋅ r/AskElectronics
Is it ok to braid the cables like this or will it cause inductance?4yr ⋅ slimejude ⋅ r/AskElectronics
70’s (possibly?) era Motorola 7303. Does any one know what this IC does? I can not find the data sheet.1yr ⋅ grandpacore ⋅ r/AskElectronics
Im new to arduino but i have a question what is the difference between these two items3yr ⋅ Sergiomedina67 ⋅ r/AskElectronics
The display of my oscilloscope is too small. How do I get it back to normal?2yr ⋅ StarBurstLink ⋅ r/AskElectronics
Monster Moto Shield came broken. Is it possible to fix this?2yr ⋅ Proper_Suggestion724 ⋅ r/AskElectronics
does anyone know what the symbol in the red box is? from a fender twin schematic1yr ⋅ theskyisfrowning ⋅ r/AskElectronics
What’s this component in the metal housing with a hole in it? It’s on a USB-C lipo charging PCB1yr ⋅ sassydinosaurous ⋅ r/AskElectronics
This is an expansion card from Frame.work laptop. Simple USBC pass through. Why did they expose copper on the edges of the PCB?1yr ⋅ RepresentativeCut486 ⋅ r/AskElectronics
Anybody know what this component is? From 1974. Google hasn't been helpful11mo ⋅ MuchJuice7329 ⋅ r/AskElectronics
This broke. Can you help save my daughter’s Christmas (more info in comments)1yr ⋅ unleash_the_giraffe ⋅ r/AskElectronics
How do these tiny transformers in cheap power cables not burn out when an input voltage of 240Vac passes through it?2yr ⋅ Disposable_baka404 ⋅ r/AskElectronics
I sourced this 16 relay Bluetooth board and it worked well. Now I need something similar where each channel also has variable voltage output. So the Bluetooth msg would include channel number, and intensity value. Any thoughts on sourcing such a board vs. building it from scratch?3yr ⋅ hyteck9 ⋅ r/AskElectronics
Why must we have a transformer in such a configuration? (AC-DC Power Supply Schematic from TI WEBENCH)3mo ⋅ Samson1888 ⋅ r/AskElectronics
(Newbie) is this capacitor faulty? The top is still flat but some sort of protection on top of it is crackled. Can I test it with only a multimeter? Thx!2yr ⋅ roykratoslief ⋅ r/AskElectronics
Made a stupid mistake in an RGB lighting project. If you use the WS2812Bs for a project, take note that the marker is on Pin 3 for some reason!3yr ⋅ bleedingoutlaw28 ⋅ r/AskElectronics
I found this milliamp meter but I want to modify it to read amps instead of milliamps how to go about this1yr ⋅ Fuzzycreeper56 ⋅ r/AskElectronics
Will this circuit work? 12V water valves are controlled by raspberry pi through mosfets.1yr ⋅ Guilty-Hyena-1248 ⋅ r/AskElectronics
What kind of component is this? Can I just desolder it or do I need to replace it?2yr ⋅ power4pi ⋅ r/AskElectronics
Need advice for untangling rats nest and components arrangement. where to start and how to route tips and tricks?3yr ⋅ J35U51510V3 ⋅ r/AskElectronics
Is there a way to find out the forward voltage of these LEDs? I bought them from Smraza but their site has no info on them.3yr ⋅ OldSell3 ⋅ r/AskElectronics
Does anyone know how to remove those locks (they have spring under the cap)? It is a Samsung monitor circuit board. I don't want to use a screwdriver to dig them out, it may damage those locks.1yr ⋅ silver_ai ⋅ r/AskElectronics
Noob question: Can you solder the female plug to the board? is from a pc screen. I want to build a MagicMirror but I don't want the frame to be too thick.1yr ⋅ DasSchafMachtMuh ⋅ r/AskElectronics
What is the purpose of this transistor in this PWM MOSFET circuit? Why can't the PWM signal be directly connected to the MOSFET ?1yr ⋅ EnoughConstruction86 ⋅ r/AskElectronics
If I have a 12V battery, and use an L7805CV to bring it down to 5V to power an LED strip. What happens if my 12V dips to 9V under load? Info in comments.3yr ⋅ zacharyd3 ⋅ r/AskElectronics
What is the purpose of this circuit? Right side goes to a 2.7V regulator1yr ⋅ nihilianth ⋅ r/AskElectronics
Are those brown lines oxidation already? This is after my first time using the iron...1yr ⋅ Huge_Extreme_7174 ⋅ r/AskElectronics
I can’t get this optocoupler to work. Any suggestions? (Details in description)1yr ⋅ Alex_Curmi ⋅ r/AskElectronics
Could someone help me understand why (in the circuit pictured) it doesn't matter if the resistor is positioned after the LED?1yr ⋅ Deisix ⋅ r/AskElectronics
Measured the voltage on a DIY full bridge rectifier. Shouldn’t the oscilloscope trace be touching zero volts before going back up to peak?3yr ⋅ panling69 ⋅ r/AskElectronics
What was this? Blue disk in electric blanket controller that exploded from power surge1mo ⋅ _SavageMessiah_ ⋅ r/AskElectronics
I'm working on a Solar Power Converter with a Supercapacitor backup based on the AEM10941 chip from ePeas. My question is - do I need to filter the solar power input? If so, what type of filter should I use?1yr ⋅ SpaceMan_The ⋅ r/AskElectronics
why does the voltage drops when I add some load to it? I'm using 68ohm resistance for load.1yr ⋅ Noor528 ⋅ r/AskElectronics
What's the bead-patterned trace to the left of the ARM chip? What purpose does the shape serve?3yr ⋅ abdulsamadz ⋅ r/AskElectronics
What effect does changing the oscillator frequency have on a bluetooth module?4yr ⋅ SmoothObservator ⋅ r/AskElectronics
Can anyone help my friend find a replacement for this Russian capacitor? It's from a record player, Soviet era. The only thing I can make of it is x-744yr ⋅ Cardeal ⋅ r/AskElectronics
what are the long red components about the eeprom chip? I thought they were capacitors?2yr ⋅ JakeClave ⋅ r/AskElectronics
Hello, I need to replace this resistor on the power module of a washing machine, but I'm bad at colors and I can't seem to find a standard value fitting those (5) colors. Can anyone help me ?3yr ⋅ wisewiseimsowise ⋅ r/AskElectronics
New to soldering. What precautions should I take before soldering so that I don't destroy the board and how should I do it? I have a 25W soldering iron.3yr ⋅ mighty_raju44 ⋅ r/AskElectronics
Nixie tube clock runs fast 1+ min each day. What should I check first?2yr ⋅ dryale ⋅ r/AskElectronics
Would this be a safe adapter and could any damage to the CRT occur from accidentally setting the wrong resolution?3yr ⋅ Fbarto ⋅ r/AskElectronics
Can someone decipher the oddity of this 1970s resistor coloring? It reads 25K on multimeter but the top band is puzzling.1yr ⋅ mattpilz ⋅ r/AskElectronics
Why does this circuit work on breadboard but oscillates on a PCB? (scope trace in comment)1yr ⋅ _teslaTrooper ⋅ r/AskElectronics
Looking for advice on finding source of audible noise in APC G5 power conditioner1yr ⋅ svideo ⋅ r/AskElectronics
Hello, I am building a tool for work and need help identifying this resistor. I've used resistor calculators however I cannot seem to find a resistor to match.1yr ⋅ Dacruz015 ⋅ r/AskElectronics
Since i not very familiar with using a function generator, i decided to make my own with the icl8038 utilizing the circuit described here (http://electronics-diy.com/icl8038-function-generator.php), and this is how i usually make my perfboards, so would this make any huge effects at this frequency?3yr ⋅ Mazen-Gomaa ⋅ r/AskElectronics
What are these big ones? They look lile resistors colorwise, but look like diodes shapewise and act like diodes function wise (Vd = 0.55V, blocked the other way). If diodes, what kind are they?3yr ⋅ gurksallad ⋅ r/AskElectronics
3 DMMs, 3 different hFE readings, same transistor. Why is this happening?4yr ⋅ D4rkStr4wberry ⋅ r/AskElectronics
Component search request. Pulled from a rotary hall effect switch. Anyone have any ideas?1yr ⋅ Woodlore1991 ⋅ r/AskElectronics
Help Identifying part no. for this RG-6 Female Connector on PCB- Any ideas?1yr ⋅ thopmans ⋅ r/AskElectronics
Can somebody please explain what is this V4 component,a i am a total begginer and I cant find anywhere what this represents.1yr ⋅ MadnessZg ⋅ r/AskElectronics
What's the practical difference between Zener and Schottky clamp circuits? (see image for example)2yr ⋅ something384 ⋅ r/AskElectronics
What is this electronic component and can I replace it? (It is a lifepo4 bms) BMS is detected in laptop but it can no longer sense any cell voltages.3mo ⋅ MembershipAcrobatic ⋅ r/AskElectronics
I bought a bunch of these voltage step up modules but the output voltage isn’t changing on my multimeter no matter how much I turn the screw.2yr ⋅ LambSauce666 ⋅ r/AskElectronics
Can someone help me explain three different resistor placement in these three usb type c male diy board?1yr ⋅ cinlung ⋅ r/AskElectronics
Any idea on how to cleanly remove the stickers from these antistatic bags so that I can store components and label them for my own use?3yr ⋅ GrabThatPencil ⋅ r/AskElectronics
These both came out of two of my Apple IIe’s and they are both the same however different. Both are 80 COL 64k however, why are they both different from one another?3yr ⋅ Bobguyawesome ⋅ r/AskElectronics
Yo! My 2070 Super took a dump at the worst time for GPUs... Only part of the board I see out of whack is this burnt R005 resistor. Could that cause it to stop working completely?3yr ⋅ BigJ43123 ⋅ r/AskElectronics
Looking to make an SMD version of the Intel4004, wikichip states the transistors are PMOS, what is a good SMD equivalent for this at less then a dime if possible?2yr ⋅ AuraKSphere ⋅ r/AskElectronics
Need to replace this small twist on light bulb. Does it say 6-3 volts and 0-15 amp or is it simply 3 volt 15 amp1mo ⋅ Maggot384 ⋅ r/AskElectronics
I have this old multimeter with a setting for measuring battery voltages. It gets the same readings as the DC voltage meter. Any ideas why it was put on the multimeter?3yr ⋅ N3W70N ⋅ r/AskElectronics
Why this fuses cap comes off so easily, is this normal and safe to use?3yr ⋅ J35U51510V3 ⋅ r/AskElectronics
What exactly does this simple circuit do? Powers flood light LED's.2yr ⋅ SirZazzzles ⋅ r/AskElectronics
What are these 2 components and what do they do? Got asked in an interview and I didn't know2yr ⋅ beacheytunez_ ⋅ r/AskElectronics
Need help identifying a replacement for this part, it detects the rpm of a woodturning lathe3yr ⋅ MrT80 ⋅ r/AskElectronics
I was testing leds to see what color they were and accidentally stumbled across an amazong phenomenon. When I touch both of these terminals while either is connected to a ground, the led illuminates (with no V or A). What's going on?!4yr ⋅ johnaldmilligan ⋅ r/AskElectronics
Is the microcontroller on my new Arduino uno assembled incorrectly? How can I fix it?2yr ⋅ ProEngineerXD ⋅ r/AskElectronics
This controller makes a high-pitched sound whenever it’s turned on. Are any of these components made specifically for that reason? And, if so, can they be removed?1yr ⋅ 1l0veBush3s ⋅ r/AskElectronics
Any tips on how to remove these white pins without breaking the case?1yr ⋅ basshead17 ⋅ r/AskElectronics
I can't get rid of these cracks in ink lines. Do anyone knows how to prevent them ?2yr ⋅ _Pumpking7_ ⋅ r/AskElectronics
What kind of component is this? It behaves as a short circuit under multimeter analysis, the board also got wet1yr ⋅ tactical_bear01 ⋅ r/AskElectronics
No dot or the notch on my comparator. How can I know where is pin 1?2yr ⋅ skiermax ⋅ r/AskElectronics
not sure where to start on diagnosing a faulty cheap netbook motherboard that doesn't turn on.,2yr ⋅ TechIoT ⋅ r/AskElectronics
I have to repair this but I don't have any 49 ohms resistor, can I put 47 ohms or can I put parralel connection with two resistors to make 49 ohms2yr ⋅ micxhailo ⋅ r/AskElectronics
I'm a highschool student and I have no idea if this circuit is parallel or series can anyone explain to me which one it is?1yr ⋅ Ayanelixer ⋅ r/AskElectronics
Complete newbie to designing circuitry here. What's the best way to make a simple PCB layout for the diagrams in the photo?1yr ⋅ W31223R ⋅ r/AskElectronics
This component inside all my smart plugs is whining, if I touch it the sound modulates (rises), and If I get with my hand around the plug plastic body, the noise is dampened. (when ON, the sound frequency increases) Is there a way to stop this disturbing noise? Thanks in advance for the insights!3yr ⋅ Vannixxo ⋅ r/AskElectronics
Does the capacitor on the right look blown (Trying to fix my raspberry PSU) ?3yr ⋅ vtheuer ⋅ r/AskElectronics
My first ever product is about to be EMI tested! Does it look like I'll pass?2mo ⋅ think_inside_the_box ⋅ r/AskElectronics
What is the purpose of these 8 diodes on the dual DC motor driver? wouldn't the motors be powered just as fine without those?1yr ⋅ I_Mix_Stuff ⋅ r/AskElectronics
Made a silly whoopsie and splashed solder onto this ribbon connector. Tips/best methods for fixing something like this?3yr ⋅ badboy10000000 ⋅ r/AskElectronics
