hi all, first post,
i've done odds and sod's over the years with too much time inbetween.. forgotten more than i know etc etc..most recently i'm back into tinkering after a long stay in a bed and sitting around in undiscribable states of illness blah blah sob story..what-ever etc etc
so, what 'defines' a ground plain? how or why is it used?
ok on a AC curcuit the third pin on the plug is the 'ground', a seperate 'terminal' more or less (in the UK).. but in a DC curcuit in a small box?
forgive any slowness.. i have key bits of info missing and in other cases a total 'block', just trying to break back through.
my aims in general are to make devices for portable power sources, battery, solar etc..
on the list,volage and amp step up, keeping a constant volt/amp current from the deminising or fluctuating voltage supply. PWM seems fairly advantagous, alas sifting the net has more than been confusing with continual fluctuasions of its own, i.e. 90 percent bull ****.. backed up with a negative feed back loop of relavent 'key bits' constantly missing in some unified fob off involving a lot of waisted cash.
i need to learn not follow a trend of buy this buy that to no avail.
(i'mabout 7 year out of any main streem so things have bound to have changed but tbh..a few transisters will always be usefull..but, a tidy small surface mount design does seem to reduce the sizes rather nicely lol!).
second question (it may seem unrelated but hey ho...its all electricity innit!)
these joule theives, as far as i can make out there is a maths to it..and obviously its limited in some way or other, but there's 'better' versions in use, alas where on the net?? another 'ooo i have one but you cant have it'.
any pointers here?
help on inductors, making them.. the banks tight this end. how to use?
sorry..lol.. theres a hole list of longggg reading that can be summed up in minutes.
thank you.
i've done odds and sod's over the years with too much time inbetween.. forgotten more than i know etc etc..most recently i'm back into tinkering after a long stay in a bed and sitting around in undiscribable states of illness blah blah sob story..what-ever etc etc
so, what 'defines' a ground plain? how or why is it used?
ok on a AC curcuit the third pin on the plug is the 'ground', a seperate 'terminal' more or less (in the UK).. but in a DC curcuit in a small box?
forgive any slowness.. i have key bits of info missing and in other cases a total 'block', just trying to break back through.
my aims in general are to make devices for portable power sources, battery, solar etc..
on the list,volage and amp step up, keeping a constant volt/amp current from the deminising or fluctuating voltage supply. PWM seems fairly advantagous, alas sifting the net has more than been confusing with continual fluctuasions of its own, i.e. 90 percent bull ****.. backed up with a negative feed back loop of relavent 'key bits' constantly missing in some unified fob off involving a lot of waisted cash.
i need to learn not follow a trend of buy this buy that to no avail.
(i'mabout 7 year out of any main streem so things have bound to have changed but tbh..a few transisters will always be usefull..but, a tidy small surface mount design does seem to reduce the sizes rather nicely lol!).
second question (it may seem unrelated but hey ho...its all electricity innit!)
these joule theives, as far as i can make out there is a maths to it..and obviously its limited in some way or other, but there's 'better' versions in use, alas where on the net?? another 'ooo i have one but you cant have it'.
any pointers here?
help on inductors, making them.. the banks tight this end. how to use?
sorry..lol.. theres a hole list of longggg reading that can be summed up in minutes.
thank you.