Bucking frequencys
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Zhangliqun
Questionologist
Re: Bucking frequencys
The current flowing in one coil in the opposite direction of the other coil relative to the magnetic field creates the cancellation effect.
But having this opposite flow also be through an opposite pole of the magnetic field cancels 60-Hz hum but leaves +/-99% of the overall signal intact.
However, there is some slight cancellation of the signal's treble, which makes humbuckers less airy/chimey than single coils.
The current flowing in one coil in the opposite direction of the other coil relative to the magnetic field creates the cancellation effect.
But having this opposite flow also be through an opposite pole of the magnetic field cancels 60-Hz hum but leaves +/-99% of the overall signal intact.
However, there is some slight cancellation of the signal's treble, which makes humbuckers less airy/chimey than single coils.
Zhangliqun
Questionologist
Re: Bucking frequencys
That's kinda rough...
That's kinda rough...
Re: Bucking frequencys
opposite flow also be through an opposite pole of the magnetic field cancels 60-Hz hum
I'm still confussed how the magnetic field cancels only 60 hz hum ?
is this a special magnet in humbuckers to do this?
Because when flipping the hot and ground of a pickup most people say its 180 degress out of phase. But out of phase of what the voltage or current ? magnetic field or flux?
The magnet has 2 terminals the North pole and south pole
opposite flow also be through an opposite pole of the magnetic field cancels 60-Hz hum
I'm still confussed how the magnetic field cancels only 60 hz hum ?
is this a special magnet in humbuckers to do this?
Because when flipping the hot and ground of a pickup most people say its 180 degress out of phase. But out of phase of what the voltage or current ? magnetic field or flux?
The magnet has 2 terminals the North pole and south pole
Re: Bucking frequencys
Thanks for the informations guys
It doesn't cancel 60hz. It cancels any frequency that comes through the air - that is, not generated by the strings.
How does it cancel out the frequencys?
Are the pickups set at 180 degrees?
Is it a special magnet that cancels out only frequencys from air?
I thought a humbucker cancelled out the 60hz ?
Thanks for the informations guys
It doesn't cancel 60hz. It cancels any frequency that comes through the air - that is, not generated by the strings.
How does it cancel out the frequencys?
Are the pickups set at 180 degrees?
Is it a special magnet that cancels out only frequencys from air?
I thought a humbucker cancelled out the 60hz ?
Marcel
New member
Re: Bucking frequencys
and to take it more exact: if the frequence is to high this effect doesn't work any more coz the phase shift differs from 180° but these are freqeuncies you won't hear
the coils are reversed *edit* connect so if hum causes a voltage U in coil 1 it cause a voltage -U in coil two... that makes a total voltage of zero!
yeah that's but it's no air needed...ArtieToo said:
and to take it more exact: if the frequence is to high this effect doesn't work any more coz the phase shift differs from 180° but these are freqeuncies you won't hear
the coils are reversed *edit* connect so if hum causes a voltage U in coil 1 it cause a voltage -U in coil two... that makes a total voltage of zero!
Last edited:
Artie
Peaveyologist
Re: Bucking frequencys
What Zhangliqun said was exactly correct. He was just a bit too frequency-specific.
But to reiterate: The two coils are connected out-of-phase. Any signal hitting them from the air is then self-cancelled. Since each coil see's the opposite end of the magnet, the signal generated by the strings is also out-of-phase. Since the coils are OOP, voila - signal back in phase.
Edit: Sorry Marcel. Didn't see your post.
What Zhangliqun said was exactly correct. He was just a bit too frequency-specific.
But to reiterate: The two coils are connected out-of-phase. Any signal hitting them from the air is then self-cancelled. Since each coil see's the opposite end of the magnet, the signal generated by the strings is also out-of-phase. Since the coils are OOP, voila - signal back in phase.
Edit: Sorry Marcel. Didn't see your post.
Re: Bucking frequencys
A humbucker uses two coils and either two magnets (or sets of magnets), or pole pieces at opposite ends of a single magnet. Contrary to popular belief (see section on myths) it is incorrect, or at least very misleading, to say that the two coils are "out-of-phase."
electrical coils by themselves, they are said to be "in-phase" when they are wound the same direction. However, pickups are said to be "in-phase" when their signals are in phase (the signal generated in one pickup adds to the signal generated in the other, instead of subtracting from it).
The polarity of a signal generated in a conductor depends on the magnetic polarity of the flux lines and the direction of travel. In a humbucking pickup, the two coils are wound with opposing electrical polarity, but the magnetic polarity for each coil is also reversed. Therefore, in a humbucking pickup we have two coils of wire, each of which is carrying two electrical signals. Each coil has the intentional signal generated by string vibration within the magnetic field and the unwanted noise signal picked up from ambient electromagnetic radiation. The polarity of the desired signal is dependent on both the polarity of the magnet and the direction of the coil winding so this signal is "in-phase" across the two coils. The polarity of the noise signal is independent of the magnets -- it depends only on the direction of the coil winding -- so the noise signal across the two coils is cancelling, or out-of-phase.
A humbucker uses two coils and either two magnets (or sets of magnets), or pole pieces at opposite ends of a single magnet. Contrary to popular belief (see section on myths) it is incorrect, or at least very misleading, to say that the two coils are "out-of-phase."
electrical coils by themselves, they are said to be "in-phase" when they are wound the same direction. However, pickups are said to be "in-phase" when their signals are in phase (the signal generated in one pickup adds to the signal generated in the other, instead of subtracting from it).
The polarity of a signal generated in a conductor depends on the magnetic polarity of the flux lines and the direction of travel. In a humbucking pickup, the two coils are wound with opposing electrical polarity, but the magnetic polarity for each coil is also reversed. Therefore, in a humbucking pickup we have two coils of wire, each of which is carrying two electrical signals. Each coil has the intentional signal generated by string vibration within the magnetic field and the unwanted noise signal picked up from ambient electromagnetic radiation. The polarity of the desired signal is dependent on both the polarity of the magnet and the direction of the coil winding so this signal is "in-phase" across the two coils. The polarity of the noise signal is independent of the magnets -- it depends only on the direction of the coil winding -- so the noise signal across the two coils is cancelling, or out-of-phase.
Re: Bucking frequencys
phase is created by staggering the pickups ?
Does the staggering the pole pieces create phase?
3 forms of out of phase
1.) reverse winding
2.) Flipping the hot and ground
3.) Reverse the magnet
Whats the diffference of reversing the magnet VS reverse the winding?
phase is created by staggering the pickups ?
Does the staggering the pole pieces create phase?
3 forms of out of phase
1.) reverse winding
2.) Flipping the hot and ground
3.) Reverse the magnet
Whats the diffference of reversing the magnet VS reverse the winding?
Re: Bucking frequencys
The guitar Pickup has a LCR internal from the magnet,coil of wire
by coil tapping the LCR goes non-linear
example the coil of wire turns= 8000 turns
coil tap the wire turns to 6500 turns
the LCR- non-linear
If one pickup is "in phase"(zero degrees) and the 2nd pickup is "out of phase"(180 degrees) i need a circuit or a transformer that would adjust the pickup to go "in phase to out of phase variable" so the pickup can go inphase zero degrees , 10 degrees,20 degrees, 30 degrees, 40 degrees, etc. until its out of phase
If the out of phase pickup is 180 degrees at 8000 turns would it be output of phase 180 degress at 6500 turns "coil tapped"?
The guitar Pickup has a LCR internal from the magnet,coil of wire
by coil tapping the LCR goes non-linear
example the coil of wire turns= 8000 turns
coil tap the wire turns to 6500 turns
the LCR- non-linear
If one pickup is "in phase"(zero degrees) and the 2nd pickup is "out of phase"(180 degrees) i need a circuit or a transformer that would adjust the pickup to go "in phase to out of phase variable" so the pickup can go inphase zero degrees , 10 degrees,20 degrees, 30 degrees, 40 degrees, etc. until its out of phase
If the out of phase pickup is 180 degrees at 8000 turns would it be output of phase 180 degress at 6500 turns "coil tapped"?
jony
New member
krankguitarist
Krankitupologist
Re: Bucking frequencys
Waters, your ****ing posts make my head hurt.
Waters, your ****ing posts make my head hurt.
