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I'm building a two box Bugle - wooden box for the power supply, metal for the Bugle, (had them kicking around) and I sourced the components locally - but could not find a small potted transformer to fit. The shop suggested using a toroidal one and just wiring it to the PSU board, so that's what I bought (30VA I thought would improve things?).
1. The tranny has no earth lead, as such. Two wires for the 230v primary and four for the +/- 15V and two 'grounds'. Jim's manual mentions the power supply can be floated... so I thought the best way might be to run a separate earth lead from the mains earth in the PSU box through to the Bugle box and earth it at the single earth point on the Bugle board (bypassing the PSU board entirely). Would this be the best idea? Or does the PSU board need an earth too? If so - where? The central hole of the (not there) transformer mount?
2. The tranny outputs I believe connect to the two pairs of holes behind (inside) the long line of holes on the PSU board where I take the regulated outputs from. Would the 'hot' holes for each pair be outer, nearest the caps, and the 'grounds' be the inner ones?
3. Is there any point shielding the DC wire loom connecting the two boxes? (The Bugle box will be ally, the PSU box is wood, so not shielded).
4. On the Bugle board, the signal inputs and outputs... each one has like a triangle of holes with a smaller hole in the middle. I'm thinking the signal connects to the 'point' hole of the triangle, and the earth/returns connect to the smaller holes in the middle, is this right?
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