IGSL

[bernte_one]

for RX stage

w=2*pi*f

2*3,14159*14000=87964,594300514210676954014731826

c =1
----------------------------------------------------------------------
87964,594300514210676954014731826²*0,0071 (Henry)

result 1,8202282200764905763847273499879e-7

0,00000018202282200764905763847273499879 Farad

Nanofarad
182,02


for TX then 236,18 nF (RX140000Hz*1,2 for TX are 168000Hz)

[porkluvr]

Try using this formula:


where

no, NO Mr. Q.

Ahem. I never did finish EE school but I did learn this:



(= angular velocity, er, radians per second)

oi?

You were probably multi-tasking and didn't take time to double check this basic formula. Ain't Latex a bear?

[Qiaozhi]

no, NO Mr. Q.

Ahem. I never did finish EE school but I did learn this:



(= angular velocity, er, radians per second)

oi?

You were probably multi-tasking and didn't take time to double check this basic formula. Ain't Latex a bear?

Sorry folks ... that was (of course) a typo. You can see that from the actual calculation.
What I meant to say was:

where

I was so busy trying to remember how to use Latex, that I cocked up the formula (doh!).

[golfnut]

descrimination

All I was just reading about a tesoro compadre... I was wondoering if the following was possible on the IGSL?

"Tesoro compadre is very easy to operate, great fun, super little coinshooter, It can reject unwanted targets such as foil and ring pulls"


Im not skilled at setting up the IGSL.....I hear Iron and Foil all the time.. Is there a quick numpty guide to reject ally?



Steve

[der_fisherman]

Don Bower's TGSL 101

All I was just reading about a tesoro compadre... I was wondoering if the following was possible on the IGSL?
"Tesoro compadre is very easy to operate, great fun, super little coinshooter, It can reject unwanted targets such as foil and ring pulls"
Im not skilled at setting up the IGSL.....I hear Iron and Foil all the time.. Is there a quick numpty guide to reject ally?
Steve

Have you downloaded and read Don Bower's TGSL 101? Its supposed to help us set up a TGSL, which is half of an IGSL......

See this page:-

http://www.geotech1.com/forums/showt...sl+101&page=33

Post #819

regards

Andy

PS. I am still "fighting" my IGSL, I think I discovered an error last night on my machine that only the non-rferrous channel is working correctly (no wonder I am having problems!!)

[bernte_one]

Sorry folks ... that was (of course) a typo. You can see that from the actual calculation.
What I meant to say was:

where

I was so busy trying to remember how to use Latex, that I cocked up the formula (doh!).

hello Qiaozhi

wrong formula was no leg break everyone should use his own brain and double check all infos he got and i have seen it while reading the bases of L and C an f
on wikipedia but you gave the right direction and a good start point got my own calculation see above i find the result for my capacitor

thx again

[Qiaozhi]

hello Qiaozhi

wrong formula was no leg break everyone should use his own brain and double check all infos he got and i have seen it while reading the bases of L and C an f
on wikipedia but you gave the right direction and a good start point got my own calculation see above i find the result for my capacitor

thx again

Glad you got it sorted in the end.

[bernte_one]

tx and rx caps

hello

just want to ask for sure
which caps inluence the frequency of tx and rx?

at tx i found c1 330nf and c2 220nf in row makes 132nf (c is c1*c2 divided trough c1+c2) 132nf and coil 1mH makes 13.852kHz

at rx c4 10nf and c43 4,7nf parallel (14,7nf) (with normal coil 14,7mH it gaves 10.826kHz)

did i miss some others

and what makes c42 (spare part - nothing build in there)?

[bernte_one]

hello is it necessary that c2 is an elko
or can i use mks2 or other in that place
(cant find the right as an elko only as mks2 or tantalum)

if all goes right my igsl works the next days with a 13inch excelerator2 coil

[anz29]

is possible or not possible? this is the problem

Is possible build IGSL with tesoro Vquero/Tejon coils?
I confirmed value of tx and rx found on this forum.
Please confirm.
The two internal trimmer for ground balance, I could replace them with potentiometers and pumping for balance in the field?
Sorry for my language, I need English lessons

[silverdog]

Is possible build IGSL with tesoro Vquero/Tejon coils?
I confirmed value of tx and rx found on this forum.
Please confirm.
The two internal trimmer for ground balance, I could replace them with potentiometers and pumping for balance in the field?
Sorry for my language, I need English lessons

Yes IGSL Musketeer version works with Tesoro 4 pin coil.
I put my vaquero coil on and it works, I'll do a video shortly
It works with Rx 15nf, but 14.7nF is better, I haven't exactly worked out exact value yet for best performance

GB trimmers can be replaced with external pots if you wish

[anz29]

re

Thank you very much, I have a vaquero with 9x8 and 10x12 coils, I try to build IGSL.
I wil buy kit musketeer on silverdog site

[bernte_one]

little coil mod problem

hello all

i have a little problem
i build the musketeer version and changed following parts
c4 220nf mks
c43 47nf mks prallel gives 267nf

c1 680nf mkt
c2 680nf elko 50v in serie give 340nf

coil is excelerator 2 with rx 0,71mH and tx 0,38mH (if right measured?)

but dont work

i calculated the frequencies of
tx 14.001 kHz (ideal would be 1,2 *f rx 13.870 kHz but cant find better caps)
rx 11.559 kHz

it should work or is there any failure in my thoughts a is this a wrong elko, maybe a 50v elko is to much ?

regards

[der_fisherman]

Electrolytic Caps

hello all

i have a little problem
i build the musketeer version and changed following parts
c4 220nf mks
c43 47nf mks prallel gives 267nf

c1 680nf mkt
c2 680nf elko 50v in serie give 340nf

coil is excelerator 2 with rx 0,71mH and tx 0,38mH (if right measured?)

but dont work

i calculated the frequencies of
tx 14.001 kHz (ideal would be 1,2 *f rx 13.870 kHz but cant find better caps)
rx 11.559 kHz

it should work or is there any failure in my thoughts a is this a wrong elko, maybe a 50v elko is to much ?

regards

Someone else can answer about your main problem better than I can, but with regard to voltage of Electrolytics, the higher the VWDC (Voltage Working DC), the larger the capacitor. There should not be any other problems due to volatge......

As long as the VWDC is not exceeded in the circuit ever, that will not be a problem. If it is exceeded, an Electrolytic can explode.....

What might be a problem is that its an Electrolytic that you have used....also, I have not personally seen Electrolytics with the values you mentioned as there are far "better" types of capacitor that cover these ranges. (I am prepared to be corrected on this point, I am only speaking from my limited knowledge).

This might imply that the frequency is incorrect, though I have to admit that I have not calculated the frequency with your values though, too lazy!!

Generally speaking the Electrolytics cover the higher ranges of capacitance needed in circuits....

What "type" were the ones you replaced? If not Electrolytic, that may be your problem...

You should always use the same "type" of capacitor (best quality) if possible unless someone like Ivconic or Simon or Eduardo says to change it......

Electrolytics have some drawbacks.....leakage being one of them if I remember correctly.

Regards

andy

[bernte_one]

thx andy

i have only changed to thetypes they were build in before
mks to mks (one mks i replaced with a mkt more precious)
elko with elko
but i think its only a problem of an elko with to much voltage
if i kow if i can replace the one elko with a mkt i would try it

it would be a dream to get my igsl working with that excellerator coil i have

any other advice welcome