Dear Friends;
I was testing a DC motor via a variable out put transformer where the out put of transformer was fed into a bridge rectifier and then to Armature. Field was fed via separate transformer. Summery was as following,
Field
Input to bridge rectifier = 110VAC
Output = ((110 x 1.414)-1.4) x 0.636) = 98VDC OK
For Armature
Input to bridge rectifier = 102VAC
Output to Arm = 126VDC while it should be;
((102 x 1.414)-1.4) x 0.636) = 91VDC
I also measured the voltage via analog meter and result was same. I increased the AC input voltage to bridge and found the same results that output voltage at bridge were always > than input voltage.
Can any bode explain why the voltage were 126VDC instead of 91?
AC Input to Bridge < DC Output! Amazing
Re: AC input to bridge < DC output!!!!! Amazing
