Need information for coils

[Igor MN]

I need information about designing different types of coils (bigger than 10 inches). And do I need do make some adjusment on PCB. Also, what shielding do you recomend? Is it the best to use aluminum pipe from TV antenna, as I heard?

Thanks in advance!

[kt315]

Igor, I repeat a math for you. eksclusively FOR YOU! so be so happy as oldie folks on this forum, as we are. attach with us.

[Carl-NC]

The damping resistor is for 500uH coils, so for any size coil, simply make it 500uH and you should not need to change the circuitry.

- Carl

[Igor MN]

not so true

using that formula i can't get 500 mh making 27 turns of 0,4 mm wire! Carl, u didn't answer me about shilding with aluminium pipe from old tv antenas.it is easier to tell mi how many turns of 0,4 mm wire for a 1 m square coil,than explaining to me ))

THANKS IN ADVANCE

[Carl-NC]

I wouldn't use aerial tubing, probably too thick. Not sure about those formulas... I have a 1m coil that has 8 turns, and I believe it is around 280uH... I will simply adjust the damping resistor. To reach 500uH, you will likely need 11 turns, maybe 12.

- Carl

[kt315]

> of 0,4 mm wire

you must get FAT wire. a mistake is people took thin wire and hopes to get a result. NOT TO BE SOMEONE, YOU GOT NOTHING WITH THIN WIRE! fat multicore wire in good isoliation is good decision.


here was KT315.

[Igor MN]

OK

OK,thanks for info.i am geting so much help from You,guys. be good