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Old March 24th 07, 08:39 PM posted to rec.radio.amateur.boatanchors
Antonio Vernucci Antonio Vernucci is offline
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First recorded activity by RadioBanter: Jun 2006
Posts: 395
Default Question re TL 922 amplifier

A second option exists. When you first power up the 922 don't panic over the
current being drawn and jump to turn it off. Wait for 10 to 15 seconds to see
if the filament heating and resultant thermal expansion will eliminate the
short for you.


Very dangerous with the TL-922. Due to Kenwood design fault, the 80V service
voltage gets shorted to ground when a grid-to-filaments occurs. After a short
while the service transformer (T2) will be permantly damaged.

73

Tony I0JX