Re: QCX tuning


Alan de G1FXB
 

Never a truer word said in jest,
transistors being the fastest fuses on three legs.....

Q1-3 & Q6 blown while protected by a F1A fuse,
It does put things in perspective what a task it appears to be?
It would be good to get to the bottom of
what brings on the perfect storm while Hans testing didn't highlight anything.

Alan

On 01/09/2018 19:54, Alan G4ZFQ wrote:
It was a 1A fuse fast type. Supply voltage was at 15V via stepup converter fed from a 12V Pb akku.
That might confirm the saying that semiconductors blow fast in order to protect fuses from blowing...

73 Alan G4ZFQ

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