Launch X-431 PAD III User Manual

Name: Launch X-431 PAD III
Brand: Launch
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LAUNCH X-431 PAD III User Manual

122

Fig. 13-4

Fig. 13-5 shows the normal secondary (the upper one) and (the lower one)

primary ignition waveform of direct ignition system. Beause the on/off of primary

circuit is not opening/closing of mechanical contact, but the conduction of

transistor. The primary voltage has no obvious oscillations within the duration,

but the voltage increases during the magnetization process due to current

limiting, and this change can cause corresponding fluctuations of secondary

voltage line as a result of induction of ignition coil.

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