J
js5895
Guest
Hi,
I'm studying electrical, what's the best way to remember the P.I.R.E.
wheel.
Thanks.
I'm studying electrical, what's the best way to remember the P.I.R.E.
wheel.
Thanks.
B
BobG
Guest
Can someone sum up the top couple of rules of algebra for him? How
about something like: 'An equation has an expression on each side of
the equal sign. To solve the equation for any of the variables, you
need to get that variable over to the left side of the equal sign. To
eliminate a variable on one side, multiply both sides of the equation
by the inverse of that variable. This doesnt change the equality,
because you are multiplying both sides by the same number.' Is this the
necessary and sufficient information needed to solve ohms law for 3
variables?
about something like: 'An equation has an expression on each side of
the equal sign. To solve the equation for any of the variables, you
need to get that variable over to the left side of the equal sign. To
eliminate a variable on one side, multiply both sides of the equation
by the inverse of that variable. This doesnt change the equality,
because you are multiplying both sides by the same number.' Is this the
necessary and sufficient information needed to solve ohms law for 3
variables?
J
js5895
Guest
Thanks, I know basic high school algebra, but I just never understood
how to apply it to real world problems. I keep reading my electrical
book on that it says "Current is directly proportional to voltage" and
"Current is inversely proportional to resistance" and then I look at
the
P.I.R.E. wheel, trying to remember the whole wheel just by remembering
those statements and some algebra. I'm looking at it like a puzzle and
noticing some patterns like, that the power formulas you have to square
or square root to find an answer, so I can see that proportional and
inversely proportional part. I'm trying to figure out how they got
something like this "I = E/R" from that statement, looking at that
formula, thinking "I" is proportional to "E" and "I" is inversely
proportional "R", and I'm thinking why did they divide?. I'm racking my
mind and I know this is a simple basic DC formula compared to other
electrical formulas like, the AC ones.
how to apply it to real world problems. I keep reading my electrical
book on that it says "Current is directly proportional to voltage" and
"Current is inversely proportional to resistance" and then I look at
the
P.I.R.E. wheel, trying to remember the whole wheel just by remembering
those statements and some algebra. I'm looking at it like a puzzle and
noticing some patterns like, that the power formulas you have to square
or square root to find an answer, so I can see that proportional and
inversely proportional part. I'm trying to figure out how they got
something like this "I = E/R" from that statement, looking at that
formula, thinking "I" is proportional to "E" and "I" is inversely
proportional "R", and I'm thinking why did they divide?. I'm racking my
mind and I know this is a simple basic DC formula compared to other
electrical formulas like, the AC ones.
P
phaeton
Guest
Lord Garth said:
math skills are not so great. I'm 10 years out of HS, and at the time
i programmed my computer to do my homework for me :-(
Yeah i know that was stupid. I'm paying for it now.
Re-teaching myself Algebra is obviously a requirement, but will I need
to teach myself anything like Calculus? Trigonometry?
I know that "electronics" is vague, and different parts of it have
different skill requirements, so take in mind that i'm mainly
interested in the musical instrument amplification/effects end of audio
equipment. Logic gates and processing signals like that isn't so
exciting for me (at least not now)- programming in C has kinda burned
me out of that sort of thing...
I always consider night classes at the local community college but i'm
always afraid i'd bomb out of any placement tests and have to start
math courses from the 7th grade or something. (Which if that's the
case, then the test worked, and it is pointing me in the right
direction and telling me exactly what I need to do).
Although, playing around with some algebra equations i've dug up
online, i'm surprising myself on some of the things i *do* remember....
Thanks for any suggestions, even if they're wrongP
-phaeton,
Smoking Si since 1994
Perhaps i'm nuts to even attempt to fiddle with electronics, because my
math skills are not so great. I'm 10 years out of HS, and at the time
i programmed my computer to do my homework for me :-(
Yeah i know that was stupid. I'm paying for it now.
Re-teaching myself Algebra is obviously a requirement, but will I need
to teach myself anything like Calculus? Trigonometry?
I know that "electronics" is vague, and different parts of it have
different skill requirements, so take in mind that i'm mainly
interested in the musical instrument amplification/effects end of audio
equipment. Logic gates and processing signals like that isn't so
exciting for me (at least not now)- programming in C has kinda burned
me out of that sort of thing...
I always consider night classes at the local community college but i'm
always afraid i'd bomb out of any placement tests and have to start
math courses from the 7th grade or something. (Which if that's the
case, then the test worked, and it is pointing me in the right
direction and telling me exactly what I need to do).
Although, playing around with some algebra equations i've dug up
online, i'm surprising myself on some of the things i *do* remember....
Thanks for any suggestions, even if they're wrong
P-phaeton,
Smoking Si since 1994