Cheap Powerful Audio Amp (v1) - Easy Circuit With Found Parts - Simply Put
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- Опубліковано 22 лип 2024
- This is my first (and pleasantly successful) attempt at the easiest and cheapest audio amplifier that's still both powerful and of reasonable quality, using only normal (not high-power) parts you'll almost certainly have lying around. No heatsinks, no capacitors, no transformers! This first version still has some issues with RF intereference because of extra breadboard wires, only does one channel, and floats when the input or output are not connected. I'm already excited for version two!
Amplifiers Playlist: • Amplifiers
You can join me on Discord as well! -- / discord - Наука та технологія
I really enjoy the way he presents his subject material. He is unpretentious and candid in his successes and failures. I hope he continues his channel.
Just the video I’ve been looking for! Thank you!
Nice to see the whiteboard work and the practical work together and show it can work, :-D
You inspire. Brilliant. I am excited to try this out.
People like you make the Internet the learning tool it was meant to be. Also you empower people like me who have difficulty understanding some of the electronic circuits. You make me strive to become better and expect more from myself.
Thank you so much for doing what you do.
nice setup,
You deserve more subs sir 🙏🏼
I love tinkering with audio amps too, recently made a pretty nice sounding guitar amp with a TDA2005 20W amp chip. It'd be neat if you showed a simple/cheap/reliable way to do the +/-12V rails maybe from wall power, for a more built in setup. Looking forward to seeing your amp iterations!
The easiest thing is to just have two transformers into two full bridge rectifiers and finally two regulators, then merging them. But I've bookmarked a circuit for a "split rail" power supply with a single rectifier and a centre-tapped transformer and I'll be looking into it!
@@simplyput2796 Cool! I really enjoy your videos, thank you very much.
Bravo! 👏
"... I'm going to forget to link it in the description." lol
Thanks, that’s pretty doable.
Version two is already done and tested! Video in a few days. Mostly the same circuit, but cleaner and with no interference.
who was the guy in the poster behind your left shoulder our right of screen at the start of the video??? here's me been just shown a circuit i need & im wondering about some guy who obviously is some kind of race driver by his getup.. i always drop you channel name when im able to answer a question correctly to others learning like me!!! CLASS AS USUAL!!
That's the legend himself, Dale Earnhardt.
@@simplyput2796 heard that name before!! racer yes??
NASCAR racer, yes.
what is the distortion level ?
Beard bro. Pls explain the inverting concept of opam
I tried to use this to power Metallica's sound setup for their show in Madison Square Garden and it wasn't strong enough. I'm disappointed and now out a job. You told me it would work on any speaker!!!!+
I love audio amps. I've built one with some LM386-1's that I have and it sounds pretty good. Single rail supply. I want to try and eliminate as much noise as possible, and all I have are switch mode power supplies and buck/boost converters which don't make clean DC, so I'm going to experiment with using a boost converter to take a 5V signal to 15V, and then use some capacitors and a 7812 to create a hopefully clean(er) 12V supply for it. I saw somewhere the LM386 has diminishing returns after 9V so I'm going to try that too (but I don't know if I have any 7809's.. I can't remember).
I was also thinking perhaps I could create a dual rail supply by using two boost converters the same way you would use two batteries.. I have some cheap buck converters I could test it with that wouldn't be too upsetting to lose if they fried.
I'm looking forward to more of these videos. I'm assuming you're using 2N3904/6's or something similar. I've never thought of putting them in parallel. My first board used them but it only took seconds before they were screaming hot. I have some large power transistors (I can't remember the designator, SC1942 I think and it's equivalent) but I have loads of 3904's and a bunch of 3906's.. it might be fun to build a second stage from those and see(?) how it sounds.
One thing about BJT-based op-amps is that they lose headroom off the top, and also my push-pull-emitter-follower arrangement loses headroom (somewhat for the same reason). So when using +/-12V I'm really expecting to use 9-10 anyway. But boosting the voltage, then smoothing, is a great idea if you have the available power. And yes, using 2N3904/6, but pretty much any one will do. In fact, since using them in parallel eliminates all power-dissipation issues, you'll actually want the one with the best low-end frequency response (20-20k Hz).
Why is every single sentence edited? It’s hard to watch.