A cell-phone audio amplifier which picks up the magnetic field of the speakers and amplifies the sounds. More photos at: electronupdate...
Жүктеу.....
Пікірлер: 24
@publicmail25 жыл бұрын
This seems unique vs bluetooth or hardwire. You are the only channel I have seen that analyzes the chip by decaping it. That is truly a teardown vs someone opening a box and babbling about the sustainability of the packing materials.
@kissingfrogs5 жыл бұрын
Today in Silicon Chip magazine I read about a kit project "An incredibly sensitive Magnetometer" to build which also used two transformers connected together as was shown here.
@pdrg5 жыл бұрын
Fascinating. Never knew such devices existed, and as always a real treat to peek inside the package.
@SeanBZA5 жыл бұрын
Not a stereo pickup but simply because various manufacturers place the speakers in different locations, so having 2 pickups means your chances of being near the speaker on all phones is very high. Speaker on the end of the phone simply because it is far enough away from the microphone so they can do noise cancellation easier, and in the corner because they need the middle space for processing chips and display connectors. Would guess this would work with the phone as a cheap speakerphone booster as well.
@publicmail2
5 жыл бұрын
Yes of course being in series it's a monoral pickup.
@marcorizza2745 жыл бұрын
Nice video, thanks for finally going through the silicon details!
@irinabonney17215 жыл бұрын
I like the way you say battery.
@slarson94835 жыл бұрын
Very cool idea. Skipping the cable and just grabbing the electrical signal right out of the air.
@atc14415 жыл бұрын
Thank you, keep on going
@pirateman19665 жыл бұрын
What a clever product. Kudos to the designer of such a cheap and clever product.
@AtlasReburdened4 жыл бұрын
Well, I guess you're the man to ask this question to. Have you have seen a manufacturer integrate any significant inductor into the die itself, or even into the spare space in the package? I'm hunting for _truly_ monolithic, tiny switching power supplies and can't seem to find anything that doesn't require support components.
@Made2hack5 жыл бұрын
That Nokia battery powers my cell phone! I have to remind myself every once in a while to plug it in and give it some juice!
@atmel90775 жыл бұрын
Why did they even invented this??? Is it because recent phones ditched the 3.5mm jack?
@publicmail2
5 жыл бұрын
Money, sales, don't forget bluetooth.
@y_x24 жыл бұрын
Normal transformer does not (or almost not) pick-up magnetic field! May be with an open end?
@SuperDogGod5 жыл бұрын
I'm wondering...a bigger speaker, more powerful circuitry and configuration, bigger sound amplification? Home theater level?
@electronic79795 жыл бұрын
Nice video
@zaprodk5 жыл бұрын
Two points i like: Using an off-the-shelf Nokia clone-battery: Good! - Dual-duty battery holder - COOL! - I wonder what happens if you insert both kind of batteries at once? :D
@SianaGearz
5 жыл бұрын
3 strategically placed diodes on the board makes me think they thought of everything, that things won't explode if you plug in USB, Li-Ion battery and 3xAAA batteries all at the same time. However i suspect there is also mechanical lockout that once AAA batteries are in, you should be unable to insert a Nokia battery. There is also what looks like a SOT-23-5 battery charger IC there and a SOT-223 linear regulator near the AAA battery input.
@merlingallagher44845 жыл бұрын
Since this thing has a oscillator on board, aren't these caps for creating the oscillation?
@IvanStepaniuk5 жыл бұрын
Does that cellphone battery have the protection circuitry under the tabs like the real ones?
@donjohnbanuelos59415 жыл бұрын
Is that a small phone or is his hands really big?
@stonent5 жыл бұрын
www.chipstar-ic.com Looks like they make amplifiers. So the shenzhen company is just rebadging it looks like, or they just licensed the design.
Пікірлер: 24
This seems unique vs bluetooth or hardwire. You are the only channel I have seen that analyzes the chip by decaping it. That is truly a teardown vs someone opening a box and babbling about the sustainability of the packing materials.
Today in Silicon Chip magazine I read about a kit project "An incredibly sensitive Magnetometer" to build which also used two transformers connected together as was shown here.
Fascinating. Never knew such devices existed, and as always a real treat to peek inside the package.
Not a stereo pickup but simply because various manufacturers place the speakers in different locations, so having 2 pickups means your chances of being near the speaker on all phones is very high. Speaker on the end of the phone simply because it is far enough away from the microphone so they can do noise cancellation easier, and in the corner because they need the middle space for processing chips and display connectors. Would guess this would work with the phone as a cheap speakerphone booster as well.
@publicmail2
5 жыл бұрын
Yes of course being in series it's a monoral pickup.
Nice video, thanks for finally going through the silicon details!
I like the way you say battery.
Very cool idea. Skipping the cable and just grabbing the electrical signal right out of the air.
Thank you, keep on going
What a clever product. Kudos to the designer of such a cheap and clever product.
Well, I guess you're the man to ask this question to. Have you have seen a manufacturer integrate any significant inductor into the die itself, or even into the spare space in the package? I'm hunting for _truly_ monolithic, tiny switching power supplies and can't seem to find anything that doesn't require support components.
That Nokia battery powers my cell phone! I have to remind myself every once in a while to plug it in and give it some juice!
Why did they even invented this??? Is it because recent phones ditched the 3.5mm jack?
@publicmail2
5 жыл бұрын
Money, sales, don't forget bluetooth.
Normal transformer does not (or almost not) pick-up magnetic field! May be with an open end?
I'm wondering...a bigger speaker, more powerful circuitry and configuration, bigger sound amplification? Home theater level?
Nice video
Two points i like: Using an off-the-shelf Nokia clone-battery: Good! - Dual-duty battery holder - COOL! - I wonder what happens if you insert both kind of batteries at once? :D
@SianaGearz
5 жыл бұрын
3 strategically placed diodes on the board makes me think they thought of everything, that things won't explode if you plug in USB, Li-Ion battery and 3xAAA batteries all at the same time. However i suspect there is also mechanical lockout that once AAA batteries are in, you should be unable to insert a Nokia battery. There is also what looks like a SOT-23-5 battery charger IC there and a SOT-223 linear regulator near the AAA battery input.
Since this thing has a oscillator on board, aren't these caps for creating the oscillation?
Does that cellphone battery have the protection circuitry under the tabs like the real ones?
Is that a small phone or is his hands really big?
www.chipstar-ic.com Looks like they make amplifiers. So the shenzhen company is just rebadging it looks like, or they just licensed the design.