Short question about graphing AC voltage before rectificaiton

[Femme_physics]

http://img521.imageshack.us/img521/8044/mycircuittt.jpg

Considering VP to the ground...

I draw only the negative pulse to define it, right?

 

[I like Serena]

Hmm, Vp to the ground isn't the negative pulse.
It's the positive pulse.

Perhaps you should try to solve the circuit for a couple of voltages.

 

[NascentOxygen]

I think RL (and not its end where you have written "K") should return to the rectifier junction where you have Earth wrongly connected.

 

[Ouabache]

I agree with Nascent about the peculiar wiring on this diagram.
FP you actually indicate a better wiring in your 1st post of an earlier question :)

 

[Femme_physics]

Oops, you're right, I fudged-up the connections...should be:

http://img705.imageshack.us/img705/6994/scrscr.jpg

http://img40.imageshack.us/img40/333/vpvpvpvp.jpg

Hmm, Vp to the ground isn't the negative pulse.

Yes, yes it is! Here!


VP starts from the negative input

http://img525.imageshack.us/img525/927/ppppv.jpg

 

[Ouabache]

Hi FP
Your full wave bridge rectifier connections look much better.

VP starts from the negative input
http://img525.imageshack.us/img525/927/ppppv.jpg

VP would only be a negative voltage if your transformer secondary were $180^o$ out of phase (as in dot notation of following figure) However, when they don't explicitly use dot notation, we assume the secondary is in-phase (What does that mean? what ILS also alluded, VP-to-Gnd is the positive voltage).

I don't see where you are taking the pull-down voltage into consideration. Perhaps you could say in you calculations $$V_{A-G}(max)[\frac{N_ב}{N_א}]$$
http://i1131.photobucket.com/albums/m543/loxandbagels/scrcircuitwithpulldownxfmr.jpg

 

[Femme_physics]

From some reason I always thought that it's the other way around...

http://img838.imageshack.us/img838/9165/oppositenormal.jpg

But you're my source, Quab, so I'll amend my err and instead of the dotted line for VP I'll add a full line indicating there's a voltage there, and at negative wave there isn't. Much appreciated

 

[Ouabache]

But you're my source, Quab, so I'll amend my ... Much appreciated

Thank you for your faith in my comments. Though the nice thing about this forum,
if I made an error, I am sure someone will 'politely' supply correction.

So my username Ouabache is the French spelling of a native American word
for the river that runs alongside my university in northern Indiana. (etymology)

 

[I like Serena]

From some reason I always thought that it's the other way around...

Regardless of the orientation, opposite or normal, Vp always has to be higher than the Earth connection (0 V).

If Vp were lower than the Earth connection, you'd have a short circuit.