It isn't really as simple as it looks, since the complexity is just inside the package.
I used these in the 80s, they were simple and did their job. The philips datasheet was updated 1982...
Marvalous, it only needs a monoraul input to create stereo, and pin 3 is for the bluetooth wireless input which requires a cristal and a 100p only.
Two times 50W output from a single 5Vdc USB supply!!!
How did Philips do that in the early 80's???????
No, don't tell me it is not true!!!!!!!!!!!!!!!!!
Two times 50W output from a single 5Vdc USB supply!!!
How did Philips do that in the early 80's???????
No, don't tell me it is not true!!!!!!!!!!!!!!!!!
The circuit in post #5 is pure fiction, click bate. TDA2611A is not a dual chip.
https://media.digikey.com/pdf/Data Sheets/NXP PDFs/TDA2611A.pdf
If you want a simple amp, look at the LM380 series, LM386 for low voltage and LM384 etc for more power.
These pictorial point-point projects are similar to the free energy posts, pure BS. Their purpose is to collect clicks, which makes them ad money. They have no intension to provide a working circuit.
https://media.digikey.com/pdf/Data Sheets/NXP PDFs/TDA2611A.pdf
If you want a simple amp, look at the LM380 series, LM386 for low voltage and LM384 etc for more power.
These pictorial point-point projects are similar to the free energy posts, pure BS. Their purpose is to collect clicks, which makes them ad money. They have no intension to provide a working circuit.
Remember today is that day of the year where I might have hooked a windshield sprayer to the starter lead on my brother's car and ran the hose up the steering column. End of the hose pointed at the driver when he gets in to start the car.
Some news articles and product specs may be suspect.
Some news articles and product specs may be suspect.
100 nF from the input to ground won't be a recipe for success. And for the love of God please draw a schematic.
Tom
Tom
The Texas Instruments lm3886 makes for a worthwhile project at about the same part count and simplicity. You'll see much more elaborate amplifiers designed around them but you may be surprised by the basic implementation found on the TI website. They also have great app notes on bridged, parallel and bridged parallel circuits as well as having an AN on suitable power supplies. The predecessor LM3875 with a handful of passive components was sold as the Gaincard which had favorable reviews and a price tag of around 3 grand with the power supply. Word got out and the gainclone was born.
I had already been baited by a diy headphone amp in an altoids tin (CMOY) article and that lead me here and to GCs. Have fun
I had already been baited by a diy headphone amp in an altoids tin (CMOY) article and that lead me here and to GCs. Have fun
Chip amps are simple though, just follow the datasheet.
Parts express use to have little fun LM1875 boards
seemed to have gone away.
But they are out there. 1876 for stereo.
National Semi/Ti use to have a power supply guide with simple soft start.
So it would soft start the power supply and provide mute for the amplifier mute pin.
All together a very nice amplifier, with pop free startup/ shutdown and a pretty healthy cap bank.
Parts express use to have little fun LM1875 boards
seemed to have gone away.
But they are out there. 1876 for stereo.
National Semi/Ti use to have a power supply guide with simple soft start.
So it would soft start the power supply and provide mute for the amplifier mute pin.
All together a very nice amplifier, with pop free startup/ shutdown and a pretty healthy cap bank.
It even produces 100W output from 5V USB power (which is below required 6V, as per data sheet). Everything is possible in India 8)
Funny, how - per data sheet - 6V to 8V supply is only good for 0.6W.
LOL You tube science is great, Im pretty sure if you added a external buffer with a 2N3055.
Be easy to bring the power up to 1000 watts no problem.
As noted on the real side of things, there is still 20 to 65 watt class AB chip amps out there.
Usually 4 to 6 dollars. The power supply like any project and case is the trick.
But yes they make things pretty simple. Just follow the Datasheet
Be easy to bring the power up to 1000 watts no problem.
As noted on the real side of things, there is still 20 to 65 watt class AB chip amps out there.
Usually 4 to 6 dollars. The power supply like any project and case is the trick.
But yes they make things pretty simple. Just follow the Datasheet