Half Wave rectifier question

Copper_pipe

Hey guys, would appreciate any help on this problem.

http://gyazo.com/797d994c1b5617555d9565d072aebc76

BrianDug

I give it a shot as:

230 V * 1/5 = 46Vrms on the secondary

Output pk voltage will be 46 * sqrt(2)/pi = 20.70V = DC component = Average value of HWR voltage
--> should be output pk = 46 * sqrt(2) = 65V as you have it, and the Dc component is then pk/pi = 65/pi = 20.70V (was on phone earlier - typos)
RMS = pk/2= 32.52V

P = I^2 * R = Vrms^2/R

P = 32.52^2/10 = 105.75W

Edit: Fixed them numbers up, I hope I didn't confuse you with the original errors.

Copper_pipe

This was my first attempt

BrianDug

You are on the right track so.

I didn't subtract the voltage drop on the diode from the answer.

ted1

BrianDug wrote: »

You are on the right track so.

I didn't subtract the voltage drop on the diode from the answer.

Is RMS not found using sq root 2?

BrianDug

ted1 wrote: »

Is RMS not found using sq root 2?

Not for this type of circuit. If it was a full sinusoid it would be sqrt(2) alright.

It can catch you out quiet easily if you are not careful.