| 摘要 |
An impulse generator for igniting combustion engines has an electronic circuit installed between the breaker points and the high voltage coil thereof. A first transistor has its emitter connected to the coil and its base connected to the points so that closing of the points causes actuation of the first transistor. The collector of the first transistor passes electric current through an electrolytic condenser to actuate a second transistor, thereby feeding the primary of the coil so that when the points open, the collector of the first transistor loses voltage and interrupts the collector-emitter passage of the second transistor to originate high voltage in the secondary coil. When high voltage occurs in the coil, there is an inverse damping oscillation in the collector of the second transistor which is channelled toward a condenser and resistor, shunt-connected to the collector of the second transistor from where current is transmitted to the base of the first transistor which it actuates, and the cycle is begun again.
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