What is the function of a circuit breaker?

1 Answers
GenevieveMarie
07/29/25 12:43pm
The function of a circuit breaker is to use the control of a cam to disconnect or close its contacts at specified times and points within a set period, thereby connecting and cutting off the low-voltage current in the ignition coil. This causes the secondary coil to induce a high voltage, which is then transmitted through the high-voltage line to the center electrode of the spark plug, generating a high-voltage spark to ignite the combustible mixture in the engine. The circuit breaker is a crucial component of the battery ignition system. The opening and closing of the circuit breaker contacts cut off or connect the primary circuit of the ignition coil, inducing a high voltage in the secondary coil due to electromagnetic induction. The circuit breaker periodically opens and closes the primary circuit of the ignition coil and is generally composed of contact points and a breaker cam. The contact pair of the circuit breaker is made of tungsten alloy, with one contact being fixed and the other being movable.
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