Reddit:Electronics

Yet another magic smoke cloud frozen in the transparent gel.
The rectifier diode(s) of this unit got overloaded, probably by a short circuit on the power board.

https://preview.redd.it/s231wzag0wqc1.png?width=1280&format=png&auto=webp&s=abea0250ccd9b134dc01061b08a0de636e269aee

https://preview.redd.it/9aa1nlui0wqc1.png?width=1280&format=png&auto=webp&s=1a42b2a6f35aec10feb93bf2a925eaf8d55ade25

Anyone know what this component is? It's on the power supply side of the pcb

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This one was found in august of last year while looking for single pole multiple throw switches.

So I dissembled a old broken vhr and I was really surprised when I found out they used a axial motor back in the day, I thought it was only recently used so yeah

Admiration for this beautiful technology I own.

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POV display working

The idea was to build a 128 pixel POV display that can display small GIF images. Happy with how it turned out. Like always the GERBER, Code and 3D model is made open-source

Also built a Image to code converter for this POV display : https://circuitdigest.com/calculators/pov-display-image-to-code-converter

POV display with 3D printed enclosure

Full tutorial: POV Displayfrom CircuyitDigest

So uh apparently I must’ve forgotten to set my dimensions to the silkscreen layer and it printed as traces since it was on the signal layer 😆🤦

This author (Stephen Fleeman) is a retired engineering professor and aerospace engineer, who loves electronics and is one of the most genius circuit analysis gurus I’ve ever met.

This is his most recent article on engineering.com. Check out the others too if you like this one!

A few days ago I asked this subreddit and a few other subreddits how to fix white noise issue of IEMs while using with laptop. A lot of you suggested to get an impedance adapter. However those are very expensive despite that the device is actually a very simple circuit that can be made at home with some soldering ability.

So that's what I did and it solved the issue. I got the schematic from this guide on diyaudioheaven and made the circuit on a small piece of perfboard/Veroboard.

Things required:

1. Small Veroboard
2. 4 resistors, preferably less than 100 ohm
3. An audio socket
4. An audio cable
5. For soldering: a soldering iron and a small amount of solder wire.

Here is the picture of what I made.

https://preview.redd.it/uomy1le1qbpc1.jpg?width=4160&format=pjpg&auto=webp&s=c7dfcc427298a8b7ab5f28559f223b154dcdb809

I am not putting the image of the backside where all the connections are made because I've taped it and I am too lazy to remove and reapply and also because it won't help anyone who won't understand the original schematic in the first place.

I didn't notice any change in the sound quality however people listening to music might notice as the connections are not super precise. I use my IEMs to listen to lectures and podcasts, the white noise was getting very annoying in any long hearing sessions, which my circuit solved. In the end I am glad.