Quote:
Originally Posted by turretslug
There's the biassing circuit loss to take into account- I forget the value necessary for the R1155 but if it was, say, -30V, then that needs to be added to the optimum +220V HT to get the best-case 250V loaded overall output from a PSU- as Don (vosperd) points out, the HT- situation/connection in the PSU in question needs to be checked.
Colin
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The voltage dropped in the biasing circuit isn't in addition to the 220 volts. The HT negative sits 'below' chassis ground at the biasing voltage and the HT positive sits at 220 volts above HT negative. So HT positive is at (220v - bias) above chassis. There is no -30v output from the ground PSU.
Andy