WEBVTT

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A PNP transistor with gain of 95 to 25 ° C

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I light a gas soldering iron

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I warm the head of the component ...

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The gain increases (when I do not 'bad contact')

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Disadvantage: when the gain increases, the intensity follows so it heats even more ...

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Snowball effect'

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The gain exceeded 500, 5 times more than at the origin!

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Gain drops rapidly

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with the help of frosting aerosol -60 ° C