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IRF540 has 100 V Vds rating and can't work. For IRF840, it's essential that the gate soure voltage rises fast enough, e.g. < 1 ms, otherwise the safe operation area would be exceeded. Lamp inrush current of about 3 A won't be a problem if the transistor is switched fast enough.
IRF540 has 100 V Vds rating and can't work. For IRF840, it's essential that the gate soure voltage rises fast enough, e.g. < 1 ms, otherwise the safe operation area would be exceeded. Lamp inrush current of about 3 A won't be a problem if the transistor is switched fast enough.
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