r/askelectronics #1

About 158 results (0.01 seconds)

Crimp 1 vs Crimp 2

Aug 20 ⋅ ⋅ ⋅ #1 #2

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my colleague and I placed a bet worth 1 week's pay about this IC being a dual diode or a transistor,

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Can someone help me identify pin 1 on this CPU?

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Any ideas on whether jacks on left numbered 1-4 are inputs or outputs?

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I need help. I kind of understand the principle of the circuit, but I can't understand why there is a resistor R1

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Replacing a blown 1uF tantalum cap... stumped about the rest.

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Trying to fix a broken board and am diagnosing issues. Are the traces by U1 corroded and in need of repair? (They look black irl)

⋅ ⋅ #They-look-black-irl #1

Accidentally reversed the polarity on this board. Can this be fixed with new components, or is it probably toast? It’s an LCD Driver Board Kit for LM270WQ1-SDF1.

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Channel 1 and 2 on my amplifier suddenly stopped outputting sound. Where to begin troubleshooting?

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Trying to identify U1. Nothing shows up from searching the silkscreen text.

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Need help identifying this. It's from 24v power supply. On silkscreen its written thr1

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How to identify Pin 1 on package without Pin 1 identifier

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After 1 use, my brand new soldering iron tip is already pretty well gone, but they usually last me a

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Looking for the right professional looking male plug (with crimps). It got to be 3X1 and it have to fit in the encircled holes... (so it can't have side plastic bits). I'm sure it's pretty standard, but I can't find it...

⋅ ⋅ #with-crimps #3 #1

Need help identifying these golden tubular things. One of them is shorted so I'm guessing it's faulty? It's 5.1 speaker system board btw

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I need help with theu hole soldering. Replacing analog stick on xb1 controller. Did I do a decent job removing the old one? Also, need help figuring out how to clean out the theu hole from excess solder as I cant get the new sensor in yet. If this is the wrong place to ask this question, I apologize

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why can i place vias on 1 resistor but not the duplicate?

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Why is LED 1 position not populated on this board from a Decathlon camping light?

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I’m once again totally confused by Kirchhoffs rules. I set up the loop rules which are useless because I have four unknowns and 3 loops, I know I need the junction rule but I can’t say that I1+I2=I3 at junction A because I? Hasn’t passed through R3 so it’s current will be different.

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About 1/4 of submissions are from Repost bots.

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Why does the measured voltage drop when measured through a 1 MOhm resistor?

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Bowling alley pinsetter circuit starts at sequence 8, instead of 1. Help?

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This green component near the Sega CD (Model 1) power port: What is it?

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what are these displays?

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what is this dial? where can I get one?

Does anyone know how can i connect this old 5.1 sony home theatre to a ps4 for audio only? This is the back of the home theatre. Thank you

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Can i replace these diodes with a regular 1n4007?

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Connecting a 18v 1,5 ah drill li-ion battery to a 12v dc motor (read comment for more info)

⋅ ⋅ #read-comment-for-more-info #12 #18 #5 #1

Does a wire with USB-C on one side and a 12V 1.8A DC power cable exist anywhere? Idk if USB-C can give enough power for this, this would just make my setup much less cluttered

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Any idea what to do with giant low voltage capacitors? 20V/40V electrolytic capacitors, around 1kF of capacitance in total (hopefully)

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1; Is this the right solder to clean these pads? 2; Do I need to add low temp to clean it?

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817C chip - which is pin 1?

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Identification of 1-Wire device

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R1, R2 & R3 values for switching SSR with transistor.

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Let’s try this again! I made a mistake and posted improper photos yesterday, I am new to learning about small electronics and trying to figure out connector pitch what pitch I should be looking for. I believe this is a 1mm pitch? But I could be wrong.

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2 questions. 1. Why is my soldering iron so golden and 2.

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Ic polarity confusion, which pin is pin 1 ?

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Looking to identify the green-sheathed component below the IC in this USB audio ADC. Board code Y1.

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I’m not sure where the 1/2 comes from.

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asked what kind of connector it was. turns out it's about 30% smaller than an rj45... 3/4L x 3/8 W x 1/

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Suggestions for a 3-in-1 multimeter oscilloscope?

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Any ideas on how to stimulate the buttons on the XB1 controller without actually pushing the silicone rubber thing down that is usually on top of these? (The four copper circles on the right side)

⋅ ⋅ #The-four-copper-circles-on-the-right-side #1

Can someone help identify this capacitor? Looks like it says 1vk 100 50, also how can I figure out the orientation on the board to solder it back on?

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Pioneer PL-518 Turntable. Cap across line. Replace with X1 safety cap?

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Need to convert 1 of ten counter to single pulses

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6c with bleed, non-twisted and 1 triad is shielded, 26 AWG.

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Long shot, but any way to identify this burnt component on my lamp, it's next to burnt fuse, marked as V1 and one side is connected to negative wire and another to fuse which then goes to live. I am guessing it's voltage regulator? Trying to understand if I can identify and replace it.

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As far as I can tell, this circuit would have the same effect as 2 AND gates being input into 1 AND gate

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It has (2) 8 mids, (1) horn, and a 15 woofer. All work and sound fine except for the horn.

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On a scale of 1 - gonna burn my house down, how dangerous is this

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How hot could this (50W rated) heatsinked resistor get while pulling 1-2W at room temperature?

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I am looking for just the right term to describe specifically all the connectors that: 1) have multiple

⋅ ⋅ #See-picture #3 #2 #1 #4

The bottom 1/4 of this mini CRT is folding up

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Basically I want to fix my old fan's buttons (off, 1 , 2 , 3) by making equivalent digital switches with

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I design a 4 kHz LC filter to reduce conducted RF from a TB6612-driven DC motor (20 kHz PWM) over a 1–

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Which corner is pin 1 on this IC?

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Can I replace this 10 Ohm 200 ppm resistor with a standard 10 ohm 1% tolerance resistor?

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Rather basic but where did this circuit go wrong? I'm trying to wire the LEDs to illuminate for each position (1st position illuminates A, 2nd position illuminates A and B, 3rd illuminates A B &C, etc). Resistors are set to keep voltage at around .85v for each LED to use a 5V supply.

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1.5vx6 D cell batteries, in series. Do you think I can hook up one 9volt source to the two end +/- terminals to power this piano/keyboard? Looking to design a way to power this with something rechargeable, and simple. Thanks

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Signal is from an AC mains wire with a 1:1000 current transformer measured across a 10k resistor in the

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What is the purpose of C1 and C2?

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Wanted to know if this method of powering a raspberry pi would work, I want to power a raspberry pi (and other electronics but i know those work) using an 11.1V lipo battery, stepped down to 9V and then 5V, that will power a female usb connector, then i will use a usb cable to power the raspberry pi

⋅ ⋅ #and-other-electronics-but-i-know-those-work #11 #5 #1 #9

Dead GPU update: When I inject 1v with current limit the core warm up slightly @4A and 0.8V ish. Then I inspected the smaller buck circuit, the high side MOSFET were shorted. Am I boned ? How likely the GPU will survive this catastrophic failure?

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I'm building a half wave precision rectifier using a lm13700 but I get significant distortion beyond 1

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Why does the led connected to 1-2 never completely turn off ? gate is shorted to ground

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Which transistors can I use to replace the defect transistors on picture 1 and 2?

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Looking for JST 1.25 Terminals to crimp or Made to Order Cable

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