| 摘要 |
<p>Ignition apparatus (2) for providing plasma ignition for an engine, which ignition apparatus (2) comprises a switching circuit (4), wave form generator means (6) for generating an a.c. wave form output, a power amplifier circuit (8) for amplifying the output from the wave form generator means (6), a d.c. to d.c. inverter (10), and transformer means (12) having primary and secondary windings (14,16) the primary winding (14) being connected to the power amplifier circuit (8) for receiving the output from the power amplifier circuit (8), and the secondary winding (16) being connected to the d.c. to d.c. inverter (10), and the wave form generator means (6) and the d.c. to d.c. inverter (10) being connected in parallel so that during operation of the ignition apparatus (2) high voltage a.c. from the wave form generator means (6) carries and sustains d.c. which is from the d.c. to d.c. inverter (10) and which is required for the plasma.</p> |
