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miner_tom
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Perhaps the title of this post is not quite correct because I could not find a way to abbreviate what I am asking.
Picture a magneto circuit, where, an alternator is used to generate an AC flux into a primary coil of a ignition coil by means of a magnetic core (the primary is wrapped around the alternator core). The flux in the primary coil increases as the AC current increases and thereby the field around it increases. The field in the secondary increases as a result. As the AC flux generated by the alternator reaches a maximum, I expect that the field in the primary would start to collapse as the current in the primary attempts to maintain the flux flow in it.
In a magneto that is used for an ignition circuit, it is known that the primary of the coil attempts to maintain the field in the core as the alternator begins to change phase. We want the flux in the primary to be at maximum when we open the primary circuit in order to have the most flux in the secondary circuit, thereby generating the most spark when the secondary field collapses.
Here is what I do not understand. As the primary tries to maintain the flow of flux in the magnetic core (the alternator core) does this decrease the flux in the primary? If it does, does the flux in the secondary reduce as well. Since we want as much flux as possible to "cut" through the secondary as the field collapses, why is the maximum spark achieved after the primary field starts to collapse.
Clearly, I have made an incorrect assumption somewhere.
Thank You
Tom
Picture a magneto circuit, where, an alternator is used to generate an AC flux into a primary coil of a ignition coil by means of a magnetic core (the primary is wrapped around the alternator core). The flux in the primary coil increases as the AC current increases and thereby the field around it increases. The field in the secondary increases as a result. As the AC flux generated by the alternator reaches a maximum, I expect that the field in the primary would start to collapse as the current in the primary attempts to maintain the flux flow in it.
In a magneto that is used for an ignition circuit, it is known that the primary of the coil attempts to maintain the field in the core as the alternator begins to change phase. We want the flux in the primary to be at maximum when we open the primary circuit in order to have the most flux in the secondary circuit, thereby generating the most spark when the secondary field collapses.
Here is what I do not understand. As the primary tries to maintain the flow of flux in the magnetic core (the alternator core) does this decrease the flux in the primary? If it does, does the flux in the secondary reduce as well. Since we want as much flux as possible to "cut" through the secondary as the field collapses, why is the maximum spark achieved after the primary field starts to collapse.
Clearly, I have made an incorrect assumption somewhere.
Thank You
Tom