IGSL

[bernte_one]

you haave uploaded and stored the Video as private
change the Setting to public otherwise it can not be seen

[Emiliano_070]

http://youtu.be/m22OkRdL7lM .Hello fellow hobby .TODAY tried a coil IGSL that left me my friend, i worked surprisingly well with good results, tx-rx-5.3mH 0.70mH .it was a coil with 5 pin of a detector (not if I can say its name)

[Emiliano_070]

thanks for your tips. a greeting

[Davor]

That depends on your coil. You may as well wrap it to aluminium foil, or a ribbon cable. If you use such high-conductivity materials, then you must make sure there are no short circuits against the coil(s). With foil it is achieved with gaps in wrapping. You don't have to leave gaps with graphite, but be warned that graphite is very messy.

[Emiliano_070]

thank you for your reply. I have to shield the coil with graphite spay yet? as will be the best way?

[Davor]

It can get warm, but not too hot. Good depth

[Emiliano_070]

Igsl

hello needed help of competent lm 7808 is heated? normal? or do I have any fault in the circuit, the detector detects it works € 1 to 36 sm. 1 mH coil tx, rx 15mH.

[Davor]

Silver Dollar did. I had some suggestions, but with no favourable end result. I'd do phasing a bit different now, if I put myself up to the task, but my thoughts are in a completely different direction now. I believe one must change a few paradigms before any advancement comes upon his endeavours.

[scrungy_doolittle]

That could do, provided you use a balanced Tx coil and sample phases from a balanced source.
I'm not fond of uncommon integrated solutions. They yell - I'M UNIQUE!!! Which translates to a hobbyist dictionary as unobtainable, or soon-to-be-unobtainable.
Such parts are fine if you build a large production and order parts in 100k batches. Otherwise ... not so much.

There are many other motor driver chips that could do, but the point is - it is much easier obtaining a discrete solution than an integrated one. Even if you revert to the mutually replaceable L293, L293D and SN754410NE that are all pin compatible, and obtainable in just about any store, the pin count and cost speak in favour of discrete solution.

Not necessarily. If they are common enough to wind up in commercial products such as a toy RC car, they are likely to be around for a while, and not to uncommon. I just picked up some hbridge drivers from Ebay. less than 1.50 with two driver chips. Dirt cheap. Designed for arduino. For me, a transistor solution is inelegant, and costly. 4 transistors and a whole host of other parts... One of the forum guys was working on a hbridge driver for the TSGL, using a tapped coil. Don't remember who exactly.

[Davor]

That could do, provided you use a balanced Tx coil and sample phases from a balanced source.
I'm not fond of uncommon integrated solutions. They yell - I'M UNIQUE!!! Which translates to a hobbyist dictionary as unobtainable, or soon-to-be-unobtainable.
Such parts are fine if you build a large production and order parts in 100k batches. Otherwise ... not so much.

There are many other motor driver chips that could do, but the point is - it is much easier obtaining a discrete solution than an integrated one. Even if you revert to the mutually replaceable L293, L293D and SN754410NE that are all pin compatible, and obtainable in just about any store, the pin count and cost speak in favour of discrete solution.

[scrungy_doolittle]

Hey, whatever happened to the hbridge driver for the IGSL. I just stumbled across something that might make that really easy.

http://www.mixic.com.cn/data/MX214B_EN.pdf

Put the coil in place of the motor.....
(found this in an RC car circuit)

[Davor]

Sorry, I'm not going to analyse Cibola right now. I have a completely different rig on my mind.

[sevar12]

Hi Davor , i think more easy to modifi cibola scheme in igsl .Can i replace ts272 with tl072 ?

[Davor]

I can explain pin1 with poor coil balance, and pin7 with too much signal at its input. You'll need to reduce it for the phase shifters if you wish to keep that huge Tx voltage.

[sevar12]

Hi Davor, this is with green pin 7 and pin 1