Hi everyone,
I found a shematic of the TESORO CIBOLA metal detector from a russian site and i have requirements for coil building :
TX : 0.95mH 4.3ohm
RX : 15.8mH 63ohm
I have 500 grams of AWG30 magnetic wire so, i would like to use it for both TX and RX but all the calculatore i found do not fit the requirement.
On CHEMELEC's calc, i find for :
TX 49 turns of 26AWG (7.8" inner diameter, length = 0.2", 0.967mH, 4.17ohm)
RX 291 turns of 33AWG (3.9 inner diameter, length = 0.3", 15.802mH, 61.94ohm)
With AWG 30 :
TX 50turns, 0.987mH, 10.56ohm
RX 289turns, 15.981mH, 31.26ohm
Should i modify the colpits oscillator to fit the coil resistance or not ?
For RX, may i add a 30ohm resistance on the coil to fit the requirement ?
Does the TGSL coil fit the CIBOLA and VAQUERO detector ?
I made the board with sprint layout 6, so i would be pleased to share it but i don't know how to add it on the forum.
I realy need advices for this cause i don't have any experience on coil calculation.
Thanks a lot
I found a shematic of the TESORO CIBOLA metal detector from a russian site and i have requirements for coil building :
TX : 0.95mH 4.3ohm
RX : 15.8mH 63ohm
I have 500 grams of AWG30 magnetic wire so, i would like to use it for both TX and RX but all the calculatore i found do not fit the requirement.
On CHEMELEC's calc, i find for :
TX 49 turns of 26AWG (7.8" inner diameter, length = 0.2", 0.967mH, 4.17ohm)
RX 291 turns of 33AWG (3.9 inner diameter, length = 0.3", 15.802mH, 61.94ohm)
With AWG 30 :
TX 50turns, 0.987mH, 10.56ohm
RX 289turns, 15.981mH, 31.26ohm
Should i modify the colpits oscillator to fit the coil resistance or not ?
For RX, may i add a 30ohm resistance on the coil to fit the requirement ?
Does the TGSL coil fit the CIBOLA and VAQUERO detector ?
I made the board with sprint layout 6, so i would be pleased to share it but i don't know how to add it on the forum.
I realy need advices for this cause i don't have any experience on coil calculation.
Thanks a lot
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