Hello all;
I have just had a discussion with a collegue about rectfiying 115V AC @ 400Hz. The question came up if we can use a power supply rated for 115V AC @60Hz to rectify 115V AC @ 400Hz.
At first I thought you could since after the bridge diode rectifer the voltage would be DC and so...
Hello all,
I am on a quest to understand the specifications for op-amps more clearly.
On this quest I am trying to measure the common mode rejection ration for a 741 op amp.
But I am at a bit of a loss how to measure considering the measurement needs to be very precise.
I have tried one...
thankyou everyone for your responses,
so it would seem that the biggest problem with a leading power factor is with electric motors. Or no load scenarios where a higher than expected voltage may occur considering that the voltage leads the current when the load is capacitive.
Hello
Why is a capacitive power factor undesirable?
I am currently working on a project and have managed to build a controller that corrects the power factor by generating a greater or lesser inductance on the system.
The system load is inductive but a fixed capacitor is used to make the...
Thankyou laffalot for taking your time for such a detailed response.
However I believe that the insulation resistance test is actually conducted at approx 500V dc while a AC Hi-pot test is at much higher voltages ie 1.5kV ac.
So taking all the above into consideration how do you decide if an...
thankyou for your response.
What I am trying to do is get an understanding of exactly what is happening when an insulation resistance test is carried out, and the same goes with the Hi-pot test.
One thing I am confused about is the difference between insulation resistance and dielectric...
Hello,
I have been reading up on Dielectric losses and came across the following definiton:
"Under AC conditions dielectric losses arise mainly from the movement of free charge carriers (electrons or ions), space charge polarisation and dipole orientation. Ionic, space charge and dipole...
Thankyou very much for your help and information.
However I am still concerned that performing a Hipot test after repair, especially minor repairs, is more detrimental than beneficial. Even though the highpot test does not intend to cause any insulation degradation.
I am looking into the advantages of doing an AC-Hipot test versus doing a megger (I think it is otherwise known as DC-Hipot test) on electronic equipment.
I am trying to get information together so that I can write a report but I am having trouble trying to compare the two tests.
I have...
