Joule Thief

[TheNOP]

"When taking measurements remember that voltage is read in parallel with the output."

yep, 2 ways to measure a circuit and both can give different reading.
in parallel with a load and without a load

"But when measuring Current you need to place some known load across the output and place your
meter in series to measure the current the load is drawing."

this way you get the current passing trug the load, not the max current available from the source.

a load (shunt) is not a necessity if your meter can read the anticipated amps without frying.
a meter have shunts, one for each scale your meter have.
if you know there will be big amps, get an inductive meter.

one advice.
the first thing we are teach in electronic courses on how to use a multimeter is to go from highest scale to a lower, if needed.
but do not change function(volts/amps/ohms) of your meter while it is connected to a live circuit it is a sure way to fry it.



a think about eddy current.
what if we try to take advantage of it instead of trying to suppress it...
sure, it depends on what we try to do and what would be the benefit/inconvenient.



Edit:
caps measurements is something completly different and the example given is not really a good one for that reason.

[Mk1]

@TheNOP

Now you are taking, i have been waiting.

[sparks]

   One problem you will encounter down the road is that most multimeters don't handle highfrequency well.  Some radio people may know a scource for meters that measure this but I believe everything is measured in decibels.

[TheNOP]

@TheNOP

Now you are taking, i have been waiting.

sorry. 

i am a slow typer and often get distracted with family matters.
also add to my deffence that english is not my primary language. 


i hope we are finished with the basic electronic lecture.
links to those kind of things were given in the begining of this tread.

[TheNOP]

   One problem you will encounter down the road is that most multimeters don't handle highfrequency well.  Some radio people may know a scource for meters that measure this but I believe everything is measured in decibels.

we know that sparks, a lots of peoples on this forum know that.
but the thing is peoples are using the tools they have or should i say use the tools they can afford at present time.