N Cook wrote:
Arfa Daily wrote in message
...
"N Cook" wrote in message
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Broken input socket but I noticed a burnt 2W resistor.
Uses 100W TDA7293 , no mention on ST PDF manual of this R-C snubber?
between speaker output and ground. 100V,1uF cap in series with 2W
resistor,
measuring existing sections maybe was 3.9 ohm , anyone happen to know
correct value .? Or hazard a suggestion , obviously not too critical as
probabably months of use with it being at near infinite resistance,
metal
oxide , does it increase or decrease in value on excessive heating ?

The R-C combination is a Zobel network, and can be quite important to the
correct operation of the amp.

2 different Carlsbro this one Beaver and the other one, Hornet, with 2 x
3055
I'd not heard of Zobel.
Does it relate to a specific type of speaker as there is no mention on the
ST sheet relating to the TDA7293 and this R-C

no, RC or RL on the output are standard protection against oscillation.


NT