Frequency generator for health

Perhaps Apple's iPhone charger makes a difference?

Apple's power adapter is clearly a high-quality power supply designed to produce carefully filtered power. Apple has obviously gone to extra effort to reduce EMI interference, probably to keep the charger from interfering with the touchscreen. When I opened the charger up, I expected to find a standard design, but I've compared the charger to the Samsung charger and several other high-quality industry designs, and Apple goes beyond these designs in several ways.

The input AC is filtered thorugh a tiny ferrite ring on the plastic case (see photo below). The diode bridge output is filtered by two large capacitors and an inductor. Two other R-C snubbers filter the diode bridge, which I've only seen elsewhere in audio power supplies to prevent 60Hz hum; perhaps this enhances the iTunes listening experience. Other chargers I disassembled don't use a ferrite ring and usually only a single filter capacitor. The primary circuit board has a grounded metal shield over the high-frequency components (see photo), which I haven't seen elsewhere. The transformer includes a shield winding to absorb EMI. The output circuit uses three capacitors including two relatively expensive tantalum ones and an inductor for filtering, when many supplies just use one capacitor. The Y capacitor is usually omitted from other designs. The resonant clamp circuit is highly innovative.

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Apple iPhone charger teardown: quality in a tiny expensive package

This article is now available in Vietnamese Bộ sạc iPhone của Apple . Disassembling Apple's diminutive inch-cube iPhone charger reveals ...
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Please Persej, when you mentioned the TEMU, and that you bought the device there, can you share with us what device it is, I mean the picture, since I looked at the TEMU, there are a lot of them, one just doesn't know which one to choose.
 
Dragan said:
Please Persej, when you mentioned the TEMU, and that you bought the device there, can you share with us what device it is, I mean the picture, since I looked at the TEMU, there are a lot of them, one just doesn't know which one to choose.
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Mine looks exactly like on Calminity. It even has the same model number (SMJAC03).
 
If you remove the magnets from headphones you can transmit almost any frequency from your soundcard or handheld sound player. You could do the same with a speaker and a stereo. But then that begs the question, why not just play the sound from the speaker...
 
Let's not forget that the audible frequency range for humans is generally between 20 Hz and 20 000 Hz.

I say it because for example I saw a lot people complaining that their device (for 7.83 Hz only) doesn't work because they can't hear anything. On the opposite, those saying that they hear something under 20 Hz make their device dubious.
 
monotonic said:
But then that begs the question, why not just play the sound from the speaker...
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Because it's not a pretty sound.

Maat said:
Let's not forget that the audible frequency range for humans is generally between 20 Hz and 20 000 Hz.

I say it because for example I saw a lot people complaining that their device (for 7.83 Hz only) doesn't work because they can't hear anything. On the opposite, those saying that they hear something under 20 Hz make their device dubious.
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If you don't use speakers this device doesn't emit any sound. It doesn't need sound to work. The frequency of the signal has nothing to do with the frequency of the sound. The sound is clearly in the audible range when you plug in the headphones or the speakers.

I tried the headphones and when I plug the device directly in the USB port in my extension cord I can hear the strong buzzing sound from the power line. When I plug the device in my phone charger the noise is significantly reduced, but it is still there in the background. Perhaps this is the reason why I don't have a positive reaction to it. Perhaps I would have a better experience with power bank.
 
Maat said:
Can you explain me what you mean by this?
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Let's say that you have a radio that plays some music. The frequency of the signal simply means how often (how many times in a second) you turn on and off that radio. The sound that comes out of the radio has its own audio frequency that has nothing to do how often you turn on and off the radio.
 
Persej said:
Let's say that you have a radio that plays some music. The frequency of the signal simply means how often (how many times in a second) you turn on and off that radio. The sound that comes out of the radio has its own audio frequency that has nothing to do how often you turn on and off the radio.
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The Calminity device claims there is no digital recordings. So, in the headphones or speakers (to convert the PEMF in sound waves), under 20 Hz, you still shouldn't hear anything, right? Or is there something that I still don't understand.
 
Maat said:
The Calminity device claims there is no digital recordings. So, in the headphones or speakers (to convert the PEMF in sound waves), under 20 Hz, you still shouldn't hear anything, right? Or is there something that I still don't understand.
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You simply hear beep sound however times in a second (for 20 Hz you hear it 20 times in a second). You don't convert PEMF into sound waves. The signal goes directly into sound.
 
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