Hi,
I wonder if someone with this knowledge can help me? I’ve noticed on my tube preamplifier the designer has taken a wire from the casing of the small power transformer to one of the adjacent reservoir capacitor clamps. Presumably a handy place to pick up an Earth. Would this be for transformer screening or electrical protection as the transformer is suspended on rubber for anti-vibration purposes. Also that reservoir capacitor has half of its plastic insulation removed so that the clamp can earth its body. Its fellow reservoir capacitor also has half the plastic removed where it is clamped to the chassis. Is that for screening which I would have thought a little unusual? Any advice about this design feature would be much appreciated as I’m wondering if I need to remove the plastic coating when I replace the electrolytic? Thanks.
Interesting setup! It reminds me how attention to grounding and screening, like in quality electronics or even property wiring, is crucial. Evans Property Management ensure electrical safety and compliance just as meticulously in every property.