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DELETED (Inactive)
7 Posts |
 Posted - Nov 01 2003 : 6:06:14 PM
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i was wondering whether or not the coil listed is supposed to be air core, or have metal (the drill bit or whatever) in it during operation? eigther or. i made a crappy coil and i dont think it will work. i have looked several places for previoulsy made ones and i have had no luck. any suggestions?
-silentmosh |
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YS
Nobel Prize Winner
USA
1132 Posts |
Posted - Nov 01 2003 : 10:41:13 PM
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definitely air core. Drill bit is used to set the diameter and should be removed. Wire should be isolated (magnetic wire) so turns do not short. Do not use wire with thick plastic isolation, as the turns will be separated more then necessary.
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DELETED (Inactive)
7 Posts |
Posted - Nov 02 2003 : 12:18:15 AM
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magnetic wire? is that just wire with some thin isolation to prevent static and whatnot, and can i pick some up at radio shack? were do you guys get parts for all of this?! I ordered from mouser one time, but that was pretty expensive, and radio shack is hella gay and barely carries anything.
thank you for all of your help so far!
-silentmosh |
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DELETED (Inactive)
7 Posts |
Posted - Nov 02 2003 : 12:35:42 AM
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i searched radioshack.com and found 'magnet wire' (cat #278-1345), is this the magnetic wire you were talking about? if so. it doesnt have any isolation, or insulation  , lol. im confused
are we looking for magnetic wire? or magnet wire? and isnt isnt ''isolation' different from 'insulation' (:.
-silentmosh |
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YS
Nobel Prize Winner
USA
1132 Posts |
Posted - Nov 02 2003 : 12:25:37 PM
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Tell you the truth, I do not know the correct name - be it "magnet wire" or "magnetic wire". It should be a copper wire, single-strand, isolated (or insulated, whatever) with a very thin shiny layer of lacquer so turns do not electrically touch each other. That kind of wire is used to make RF coils, electro-magnets (hence the name), transformers et cetera.You can get some disassembling old transformer or relay. Wire diameter might be sligtly different, then you may need to adjust turn number by experimenting with it.
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DELETED (Inactive)
7 Posts |
Posted - Nov 03 2003 : 12:41:31 AM
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hmmm. well this wire at radio shack is 'enamel covered' would that suffice it says it s 'perfect' for winding coils , and its relativly thin gauge. and one last thing. when i hook this up i plan on doing it on the COUGH telefone network interefaceCOUGH on the side of my house. should i just connect the proper terminals into the circuit and leave the others. or do they need to be going back out?
-silentmosh |
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DELETED (Inactive)
7 Posts |
Posted - Nov 03 2003 : 01:17:46 AM
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im sorry i am askin all this, i come up with more questions before you can even answer my originals  , but where the hell do you get this. i mean most of you (probably you YS) had to of made this circuit. were did you get the 2SA933! i have found it, but getting it is near impossible, i have to put in quotes for it and shit. i have no idea what to do. mouser doesnt have it and the one that they sent me said it will 'substitute', that isnt good enough. im not even sure if i can get the diodes! lol. i though getting the wire was bad. 
-silentmosh |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Nov 03 2003 : 09:28:46 AM
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If Mouser has a substitute, then use it. Substitutions are often used as manufactures make equivelant parts under different names. As for the diodes, they are ridiculously standard. Any electronics shop should have them. The magnet wire is also completely standard. It is simple enamel coated wire, available from any electronics shop (local, online, etc.).
As for hooking it all up, you'll have to figure that out. I'm not going to tell you how to mess with the phone company's box.
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DELETED (Inactive)
7 Posts |
Posted - Nov 03 2003 : 7:25:16 PM
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well. i looked for the diodes everywere. searched my local radio shack, and online. looked through mouser. and other large electronics distrubuting companies for: 1SS119 silicon diode. i didnt find ONE match. all i found were spec sheets on the damn thing. is there a substitute? or another thing i can search for/under?
-thanx for your help so far
-silentmosh |
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YS
Nobel Prize Winner
USA
1132 Posts |
Posted - Nov 03 2003 : 11:05:54 PM
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For diodes, I would use any silicon diodes capable of 100V, 100mA, or (cheapest way) 100V 1A diode bridge. For transistor, I would use 2N3906 or similar. I do not think this schematic is element-critical. It may just require extra tuning if you change the transistor. See also lots of info in sound/radio topic on FM transmitter - quite similar.
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DELETED (Inactive)
7 Posts |
Posted - Nov 04 2003 : 01:03:43 AM
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ok. i have found this: Rectron Rectifiers, Glass Passivated Silicon
DO-41 1A, 100V. Will this suffice? and i have plenty of 2N3906 laying around here somewere. i didt realize that they were that similar, i need to do some more reading /:.
-thanx for all the help so far ;)
-silentmosh |
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YS
Nobel Prize Winner
USA
1132 Posts |
Posted - Nov 04 2003 : 11:03:27 PM
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Diodes should be OK. As for 2n3906, I did not say "similar to specified transistor", did i? I just have a feeling that this type will work in the circuit.
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fm fone bug
