/r/electronics
Discussion and news about component-level electronic circuits.
A subreddit dedicated to news, articles and general discussions related to the field of electronic engineering.
Rules
Be civil: Do not insult fellow Redditors. Do not yell. As this is a professional sub, act and speak professionally.
The focal point of a submission must be component-level electronic engineering, design, news, and circuits (with at least one active element: a semiconductor or a vacuum tube/valve). See below for off-topic subjects.
No commercial or promotional posts: advertising, endorsing or praising a company, fundraising and crowdfunding, giveaways, sponsored products and services, selling, offers, product announcements and information, blogs, videos, pictures of / links to commercial boards. Applicable even if free or if submitter does not benefit monetarily. This sub abides strictly to Reddit's Rules of Self-promotion. [Post offers related to electronic engineering in /r/ElectronicsList]
Add a flair your submission.
- 'Project' must link to full (non-commercial) build instructions. Otherwise, use 'Gallery'.
- 'Tip" is for tricks and suggestions useful to the electronics designer
Off topic
- 2a) Ready-made electronic assemblies (e.g., a Single-Board-Computer - Arduino. PI -, a relay module, a computer mouse); projects that are based entirely on such ready-made electronics assemblies (e.g., a green-house watering system that uses an Arduino and no other electronic components)
- 2b) Plain electrical components and circuits (no active components), such as transformers, relays, resistors, light bulbs, cables, batteries, connectors, sensors)
- 2c) Consumer products (marketed as "electronics") or self-made products, even if historically significant. Do not post an enclosed assembly just because it contains 'electronics' internally
- 2d) Questions [Ask questions about electronic circuits and components in /r/AskElectronics]
- 2e) Memes (pictures w/text), low effort ("shit-posts"), as decided by the mods. [If about electronic circuits and components, post in /r/ElectronicsHumor]
- 2f) Labs and test equipment [If electronics, post them here on a Wednesday. No submissions that may be considered to be focusing on equipment brands rather than technical merit. One submission a week max.]
---- Click HERE for our Wiki ----
Tags / Flairs
Please categorize your post by clicking the "add tag" (flair) button after submitting it.
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General pictures or videos related to component-level electronic engineering (See posting Rule #1).
Videos with commercial content or sponsorship/patronage requests are likely to be removed; repeat offenders may be banned from the sub. If in doubt, contact the mods before posting.
Electronic engineering-related posts that don't fall into any other category.
An electronic engineering-related news article or announcement.
Show us your (or someone else's) electronic circuit design and/or final build.
If you are just posting pictures or videos with no further write-up, please use the 'Gallery' tag.
Videos with commercial content or sponsorship/patronage requests are likely to be removed; repeat offenders may be banned from the sub. If in doubt, contact the mods before posting.
To qualify as a project, the details available should allow someone else to make a copy.
NB: This is for original work - pictures of stock kit builds will be deleted.
A useful or insightful technical note on component selection, circuit design or testing etc. - something beyond 'stick decoupling caps everywhere'!
Related subreddits
- Ask Electronics
- Electrical and Computer Engineering
- Digital Electronics
- Logisim digital circuit simulator
- FPGAs
- DSP
- PLC - Programmable Logic Controllers
- PrintedCircuitBoard
- RF Electronics
- Electronic Circuits
- ECE Component Exchange
- Nice Chips
- AppNotes
- The AmpHour
- Hardware Startups
- Engineering
- Amateur Radio
- Car Hacking
- DIY Tubes
Electronic circuit design and repair questions go in /r/AskElectronics •
View and contribute to our wiki page for beginners
Banner from original picture by Sergej Klammer (/u/zappadoing). Used with permission. Licence: CC-BY-SA*
↓ (please edit!)
/r/electronics
924,068 Subscribers
Found my old SP0256-017 speech generator (Radio Shack part number 276-1783)
21:02 UTC
🙌
19:30 UTC
RCA photomultiplier
13:33 UTC
Crimping ain't easy
Spotted this monstrosity in the wild
23:23 UTC
Linear regulation circuit just for fun
It has no any practical purpose. However I think it got somewhat fancy so I post it.
So it has adjustable output voltage and overcurrent protection. The goal was to make something with minimal set of basic parts.
Simulation here https://tinyurl.com/ywqfok6x
Would be cool to hear any design suggestions, but again it is just for fun and probably won't be wired
16:19 UTC
This vending machine serves Raspbery Pi and Bread boards
There are a few capacitors to nibble on if you are still hungry:
Vending machine in the basement of Portland State University's engineering building
20:58 UTC
Weekly discussion, complaint, and rant thread
Open to anything, including discussions, complaints, and rants.
Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.
Reddit-wide rules do apply.
To see the newest posts, sort the comments by "new" (instead of "best" or "top").
15:00 UTC
You do get better at soldering, right?
06:18 UTC
what do you think
what is your experience with chatgpt when it comes to electronics ?
12:03 UTC
Saved Synology NAS today
Saved a NAS ds2415+ a friend given to me for free because did not booting at all. It was the notorious bug of the intel c2000 processor.
08:59 UTC
Putting together a guitar tremolo pedal kit as a first big project
I’ve tinkered a bit with soldering here and there but haven’t done anything proper other than like a blinking LED circuit.
Funnily enough, this pedal works by modulating the blinking of an LED light, and only allowing signal to pass through when it’s on.
Well, assuming I get any signal at all once I’m done 🙈
01:09 UTC
Managed to replace the USB C port on my laptop that wasn’t charging anymore, smallest pins done yet!
Industrial maintenance sparkie by trade and have never soldered anything smaller then 8SOIC pins. My personal laptop started to stop charging unless the port was bent to the perfect position and I figured I might as well give replacing the USB C connector a shot and try and save myself 3 grand. Surprised it actually worked.
23:58 UTC
So close to being restored completely. Bell Sound Division 2418 TwR Stereo Tube Amp.
I’ve been working on this amp for a while now. Every foil 0.05 mf total of 8 were bad. Replaced with sprague orange drops.
Can cap C1 a 40/40 mf 350vdc was also bad. Replaced with a 50/50 mf 500vdc.
Can cap C2 20/20/150 mf 350/350/50 vdc was shot replace with a 150mf 250vdc. I haven’t replaced the 2 20 mf sections yet. I don’t have the right caps. They are bad Tom reading 39-33 mf.
Replaced volume pot and re wired leads to it.
All tubes are excellent all 12AX7s from the same 10 pack ge box form 76. 6v6gts all Ken rad black glass. Rectifier 6CA4 is used but strong. All tested for shorts / gas / micromhos with my TV-7 completed with all accessories and documentation. Fully restored.
Have spent hours cleaning it.
Currently, the replacement of the caps has fix a ton of issues. Distortion/Phase issues between channels.
The only issue right now is the left and right Channels are not balanced when pot is in the center and volume is at 50%. The left channel is about 33% higher than the right, turning the balance knob from 12 o’clock to 2-3 o’clock lines both channels up smack dab on top of each other. I was thinking it was an issue when I rewired the pots. However, I can’t rule that out until I replace the can cap with the 2 20 mf 350vdc.
23:21 UTC
Weekly discussion, complaint, and rant thread
Open to anything, including discussions, complaints, and rants.
Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.
Reddit-wide rules do apply.
To see the newest posts, sort the comments by "new" (instead of "best" or "top").
15:00 UTC
I made a tiny esp32
23:55 UTC
Thought it was a capacitor at first, turns out it's a Li-ion battery in the body of a capacitor!
11:12 UTC
So i was checking out the JLPCB library for capacitors.. Looks they got a new addition
19:21 UTC
Weekly discussion, complaint, and rant thread
Open to anything, including discussions, complaints, and rants.
Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.
Reddit-wide rules do apply.
To see the newest posts, sort the comments by "new" (instead of "best" or "top").
15:00 UTC
These things did exactly the same thing but 40 years apart. Horizontal deflection amp for a CRT
17:34 UTC