51v phantom power

[matthias_edp]

Hi,

Im building a power supply for a Tab amp module. So I made two supplies. One that give 24 volts, for the module. And one that has to be give 48 volts as a phantom power. But it just give me 51v volts and not 48v. my question is that to much or is there a tolerance.And is 51 in that tolerance?

 

[Samuel Groner]

How did you measure the voltage? Most regulators need some current flowing, so put a 3k resistor from the output to ground. However, 51 V should be OK for most/all situations.

Samuel

 

[matthias_edp]

at the output. but without the 3k risistor. i will try that out this evening.

thx