| 摘要 |
An engine igniter for a multi-cylinder engine has a plurality of power transistors for controlling the currents of corresponding ignition coils. The emitters of the power transistors are connected in common to a current sensing resistor. A differential amplifier amplifies the difference between the voltage across the current sensing resistor and a reference voltage. A current mirror circuit having a plurality of output terminals is driven by the output of the differential amplifier. Base current control transistors which control the base currents of the power transistors are controlled by the outputs of the current mirror circuit.
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