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Old 2nd Jul 2020, 5:00 pm   #5
bikerhifinut
Octode
 
Join Date: Nov 2013
Location: Penrith, Cumbria, UK
Posts: 1,993
Default Re: Rogers Ravensbrook series2 amp. Before attempting a capacitor replacement.

Quote:
Originally Posted by turretslug View Post
Zener diodes aren't "perfect" devices, they do have some slope resistance, i.e. changing the current through them will result in a slight change in the voltage across them. As the transformer secondary voltage rises as a result of feeding it on the 220V primary as opposed to the 240V option, so the current through the Zener increases and the voltage across it rises slightly.
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