Quote Originally Posted by Clive S View Post
Neile I am a bit concerned here. You say the o/p is 68V DC that equates to a 50V (roughly) AC transformer. Does your transformer actually say 58V on it!!
The PSU in question was bought from Zapp and is the PS806-5, nominal outputs 68V and 5V. They don't list this one at the moment but it is probably near-identical to the current PS806-12, the only difference being that mine has an auxiliary 5V output and the -12 has a 12V auxiliary. The listing and the PSU itself both say 68V DC. However, looking more closely at the transformer, I might have made a boo-boo. It has a tapped secondary with both 58V and 48V outputs. I know that only two of the three transformer secondary connections are in use and without thinking this through properly, I assumed that these were the 58V connections. However, the 48V AC would indeed give a peak voltage of around 68V off-load. I would check the colours of the tap wires in use but they are in Chinese... I'll try checking with an ohmmeter later but measuring slight resistance differences in a low-voltage high-current secondary might not be conclusive.

In the meantime, Rapid are living up to their name and the new transformer is already in transit. Might be sending it back for exchange...