finally good winding

[Micheal]

everything looks good- nice job I like the clear finish...but that sheilding worries me ,have you tested it yet

[simonbaker]

everything looks good- nice job I like the clear finish...but that sheilding worries me ,have you tested it yet

I've done quick test, but not in low noise environment. The coil works, but I can't give exact air depth until later.

What worries you about the shield? (I have my worries also)

Regards,

-SB

[Jerry]

Aluminum Shields

I am using shields similar to Simon on a 20 cm coil and it tests 30+ cm
in air.

Just getting to the plastic shell making phase so do not have them potted yet.

I too am waiting for bad weather so I can spend more time on this project.

Jerry

[simonbaker]

I am using shields similar to Simon on a 20 cm coil and it tests 30+ cm
in air.

Just getting to the plastic shell making phase so do not have them potted yet.

I too am waiting for bad weather so I can spend more time on this project.

Jerry

I encourage you to start a thread in the Tech or Projects forum and post some photos of your project, results, and ideas so far.

Cheers,

-SB

[Jerry]

Hi Simon,

I am planning on doing that. I just want to get a finished coil so I have something more to show and talk about. So far things are looking good.

Jerry

[lunamay]

ok simon it looks like this(pic.) im hunting for cheap osc aspecialy analog this music card idea is not to good because i must make a lot of deviders and freaquency max is about 15kHz (in practice about 10kHz) so it's not enought eaven in this project. i have built good coils but i must calibrate this coil cap c6 or c9..i don't remember good thing is that works . i burned it once when i conected power suply backwords..i replaced few things and it works..now i'm trying to make a chasis for pcb from metal and then i will make a chasis for coil and i'll balance it as nice as it posible..meanwile best regards

[lunamay]

sory for resolution and not good quality

[simonbaker]

sory for resolution and not good quality

Looks beautiful to me. What is the current status of it?

How about some pictures of your workshop just for interest.

Regards,

-SB

[lunamay]

my workshop? hmm.. it looks like ordinary room..but when i'm building some prototypes my room looks like spider's web:P i live in a flat so i don't have a special"workshop"..that's why i must do everything in my room..sometimes on my bead:P
best regards

[simonbaker]

my workshop? hmm.. it looks like ordinary room..but when i'm building some prototypes my room looks like spider's web:P i live in a flat so i don't have a special"workshop"..that's why i must do everything in my room..sometimes on my bead:P
best regards

Thanks for pics -- always interesting.

I know exactly what you mean -- similar for me. I hope someday to live in a house with a real workshop where I can leave everything set up. Then can work much faster and easier. My wife has allowed me to take over quite a bit of space, but always need much more.

I hope you can buy an oscilloscope. I think for you the kind that attaches to computer would be good.

So what is the current status of your TGSL? Working at all?

Regards,

-SB

[lunamay]

my tgsl is still in progres. it works fine but i have to deal with few problems like coil cable. it's shealded but when i tought it it beeps. i conected it like it was said on forum but still beeping. i must make something like transmition to geb pot just to have more than one turn of it to put a corect value. i seen somewhere some kind of pots that have more than one turn..for exampe 10 but it's wery expensive so i'll make one just to check. that will give me a very precise geb pot. also i have to secure my pcb because oxygen and moisture is not healthy for it:P..some varnish or something else. finaly i have to make some more deep because it's poor.. about 20-22 cm.today i will try to make a metal chasis from stanless plate for pcb and maybe something more.. i have a free time just to begining of October because i'm starting the last semester of my engeniring studies and..if it all goes good i will have a engenear exam in february..so i have to learn as lot as i can..but i hope to continue my work with tgsl in free time. meanwhile i have to make a chasis because this spider web of mine is very disturing:P

best regards

[Jerry]

I posted a few pics of an aluminum chassis with most of the covers off yesterday. The work isnt the best but you can get the idea of what I was trying to do.

Look in TGSL Experiments #286

I had results similar to what you are getting with my first coil last Winter, so I moved on to another coil which is a bit smaller and is pretty close to spec. (5.79mh tx, 6.23mh rx.) The new coil ground balances very nice with just a normal rotation GB pot.

Good Luck

Jerry

[lunamay]

hi jerry
this is my third coil and it has very good parameters : 6.5 and 6.003m
H maybe i'll build another one jus to check. i like the way simonbaker made his coil the way of my work was almost the same but i glued everything after turning and didn't use wax(wich was terrible:P) now i'll make some mesurements..nice to see your voltages in characteristic points and zero cross voltage,null voltage etc.

best regards

[simonbaker]

my tgsl is still in progres. it works fine but i have to deal with few problems like coil cable. it's shealded but when i tought it it beeps. i conected it like it was said on forum but still beeping. i must make something like transmition to geb pot just to have more than one turn of it to put a corect value. i seen somewhere some kind of pots that have more than one turn..for exampe 10 but it's wery expensive so i'll make one just to check. that will give me a very precise geb pot. also i have to secure my pcb because oxygen and moisture is not healthy for it:P..some varnish or something else. finaly i have to make some more deep because it's poor.. about 20-22 cm.today i will try to make a metal chasis from stanless plate for pcb and maybe something more.. i have a free time just to begining of October because i'm starting the last semester of my engeniring studies and..if it all goes good i will have a engenear exam in february..so i have to learn as lot as i can..but i hope to continue my work with tgsl in free time. meanwhile i have to make a chasis because this spider web of mine is very disturing:P

best regards

Do you have a potted-glued coil that you can take outdoors?

Don't trust depth measurements until you make sure you get away from power wires and everything else -- maybe your MD is better than you think.

Also, until the coil is potted firmly, I don't know if you can measure good depth because any vibrations can make noise. Certain noise will reduce depth, even though you might think it would just add noise -- no, it reduces depth too, I'm quite convinced.

Regards,

-SB

[simonbaker]

my tgsl is still in progres. it works fine but i have to deal with few problems like coil cable. it's shealded but when i tought it it beeps. i conected it like it was said on forum but still beeping. i must make something like transmition to geb pot just to have more than one turn of it to put a corect value. i seen somewhere some kind of pots that have more than one turn..for exampe 10 but it's wery expensive so i'll make one just to check. that will give me a very precise geb pot. also i have to secure my pcb because oxygen and moisture is not healthy for it:P..some varnish or something else. finaly i have to make some more deep because it's poor.. about 20-22 cm.today i will try to make a metal chasis from stanless plate for pcb and maybe something more.. i have a free time just to begining of October because i'm starting the last semester of my engeniring studies and..if it all goes good i will have a engenear exam in february..so i have to learn as lot as i can..but i hope to continue my work with tgsl in free time. meanwhile i have to make a chasis because this spider web of mine is very disturing:P

best regards

Keep up the good work, hope you have time to keep playing with TGSL. Good luck on exams.

-SB