Ignition Coil Output Voltage versus a Weak BatteryYes, an ignition coil is nothing more than a dedicated, specialized transformer. As such, the lower the voltage in the primary winding, then the lower the voltage induced in the secondary [output] winding.
When you take a voltage reading at the coil with ignition on and the ignition points are open you would get the same reading on both + and - .
This intriguing subject brought forth an incredible search of the internet. It turns out the ignition coil transforms voltage from a battery in order to create an electric spark in the spark plugs which leads to the ignition of fuel.
no, the voltage regulater is for charging not the ignition system, it can however drain the battery
Could be either a bad ignition switch or a bad voltage regulator (not opening circuit on shut-down)
Vehicle spark plug ignition.
When the ignition is turned on, battery voltage passes down the wire to the alternator to 'excite' the alternator when the engine starts. When the engine starts and the alternator generates a voltage, the light is extinguised by the charging voltage cancelling out the battery voltage coming down the wire. If and when the alternator completetly fails the the light will come back on as there is no sancelling voltage. if the alternator produces a voltage lower than the voltage from the ignition switch then the battery light will glow.
12 VOLTS
Ignition coils generate the voltage needed to create the spark for ignition of the fuel air mixture, without it the vehicle will not run.
Constant voltage delivery Eliminate the need for periodic replacement of points and condensor
Too much voltage an ignition coil does not run on 12 volts it is stepped down
within one volt above or under battery voltage