Technical background
The HandHeldHero external guitar pickup is a fairly simple device used in front of the guitar. At the top of the strings on the guitar, the pickup is used to convert the vibrations of the strings into electric signals which are converted to sound via the amplifier. The HHH-pickup is in essence an inductor at low frequencies and as a capacitor at high frequencies. The impedance of the HHH-pickup is frequency dependent, both when it behaves as an inductor and when it behaves as a capacitor. There is copper wire wrapped around the HHH-magnet, with the beginning and end of the wire set up to be the leads of the pickup.

The guitar strings are coils in a magnetic field. When they vibrate, they induce an electromagnetic field in the coils of the string. This electromagnetic field then creates a magnetic dipole in the string. These small vibrating magnetic dipoles then induce an electromagnetic field in the wire wrapped around the HHH-magnet. This electromagnetic field oscillates at the same frequency of the string and therefore carries the vibrational (and thus sound) information of the strings. The HandHeldHero provides the impedance, the real part or resistance of the impedance, the reactance of the impedance, the resonant frequency, the phase angle, the magnitude of the impedance and the power.

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