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Topic: Coil tap

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	Coil tap - Wikipedia, the free encyclopedia
		The coil tap(s) are points in a wire coil where a conductive patch has been exposed (usually on a loop of wire that extends out of the main coil body).
		When a coil tap is connected to one end of the coil (or the end disconnected and reconnected to the tap), the section of coil between the tap and its connected end is bypassed - effectively reducing the number of turns in the coil.
		In a transformer, coil taps are often used on both the input and output coils.
	en.wikipedia.org /wiki/Coil_tap (302 words)

	Coil - Wikipedia, the free encyclopedia
		Coils are often coated with varnish and/or wrapped with insulating tape to provide additional insulation and secure them in place.
		A Oudin coil is a disruptive discharge coil.
		The RNA coil is a nucleic acid structure consisting of a string of covalently-bound nucleotides.
	en.wikipedia.org /wiki/Coil (1066 words)

	Parker Guitars Forum - coil tap? (Site not responding. Last check: 2007-10-12)
		A coil tap refers to a lead connected to an individual coil’s winding and is used to raise and lower a pickup’s output and change its tone.
		Coil splitting refers to the ability to disable one coil in a humbucker-type pickup.
		The term coil tap in relations to a humbuckers is often used incorrectly when what is meant is coil splitting.
	www.parkerguitars.com /forum/topic.asp?ARCHIVE=true&TOPIC_ID=67 (777 words)

	Guitars: Glossary
		In coils and transformers a center tap is a tap (see WFTD Tap) at the center of the winding of wire, which puts it at the halfway point of the overall impedance and voltage of the coil.
		In general a coil tap is an access point somewhere along the wire that is wound in a coil or transformer.
		Transformers may have their coils tapped to provide different voltages in a power supply that may be required for the operation of some device, for example.
	www.sweetwater.com /shop/guitars/glossary.php (13032 words)

	Seabrook Crystal Radio
		Radio 7 on the left is a 2 coil design employing enamled magnet wire, 5 taps on the tap switch and a slider on the ground coil.
		The large plastic detector coil standing upright on the left is a hub from a spool of wire that I hack sawed the ends off of.
		I soldered the diode to the red coil wire and I attached the red wire on the antenna coil with solder as they had done way back when it was made I also soldered the detector coil tap.
	home.comcast.net /~josetrot/radios.html (1979 words)

	Guitar.com - THE Portal for Guitar Enthusiasts (Site not responding. Last check: 2007-10-12)
		A single coil pickup has a brighter and cutting sound and is used by players of many styles from blues to rock.
		Coil taps are useful when trying to achieve a wide variety of sounds in a single guitar.
		Coil tappping is actually when a lead is taken from the coil of a pickup at a certain percentage of the windings available, therefore disengaging some of the windings of the coil and using the rest.
	www.guitar.com /discuss/readmsg.asp?MessageID=4998378&sPath= (353 words)

	Experimenting (Site not responding. Last check: 2007-10-12)
		With her setup, changing the coil tap over the band is necessary, as would be expected from a short antenna.
		This last puzzled me, since the coil I was using one was one from an old oatbox special, and the "rig", to use the term loosely, was strung out all over the table and hooked together with alligator clips.
		Tapping the detector down on the coil is a common design technique for best impedance matching between detector/audio and tank circuit.
	www.thebest.net /wuggy/exper.htm (3018 words)

	Build a Ten Gallon Loading Coil Variometer for MF/LF
		The trade-off to this wide range of adjustability is that there is a slight loss in coil Q and an increase in the loss resistance of the coil because of the taps and the changing form factor as the coil taps selected.
		The tap was formed by removing about three inches of insulation from the wire as it was being wound on the bucket, and then grabbing the center of the bare wire with a pair of regular pliers and twisting the wire through 360 degrees.
		This view shows the manner in which one end of the variometer coil winding is fed through a hole drilled in the wall of the coil form and connected to one of the two flexible wires leading through the shaft.
	w5jgv.com /variometer/variometer.htm (1542 words)

	TEXAS BUGCATCHER Specifications
		Our coils are all of the large, open, air-wound type to prevent the buildup of moisture, dust and dirt between the coil and coil form and to insure the highest "Q" and best performance.
		With the 75 microhenry inductance of this coil, a whip 6-1/2 to 7-1/2 feet long must be used to resonate on 75/80 meters when a capacity hat is not used.
		The ring connector is mounted atop the coil and the NEW "BANANA-PLUG" coil taps are attached to the coil.
	www.texasbugcatcher.com /cata/tbcspec.htm (3904 words)

	Top 20 Encyclopedia
		The telephone tap or wire tap received its name because, historically, the monitoring connection was applied to the wires of the telephone line of the person who was being monitored and drew off or tapped a small amount of the electrical signal carrying the conversation.
		Telephone tapping is officially strictly controlled in many countries to safeguard an individual's privacy; this is the case in all developed democracies.
		In theory, telephone tapping often needs to be authorised by a court, and is, again in theory, normally only approved when evidence shows it is not possible to detect criminal or subversive activity in less intrusive ways; often the law and regulations require that the crime investigated must be at least of a certain severity.
	encyc.connectonline.com /index.php/Wiretap (2285 words)

	Thor primary circuit measurements
		The primary circuit is composed by 9.5 turns of copper pipe (primary coil) and a 0.1 μF pulse capacitor.
		Coil and capacitor were connected in parallel and driven by a HP33120 waveform generator.
		In Table 2 below, the primary coil elevation is defined as the distance from the underlying PVC table, but also the distance from the secondary coil base turn is given, for reference.
	www.elisanet.fi /dncmrc/thm_pri.htm (244 words)

	MusicPlayer Forums: Series/Parallel humbucker (Site not responding. Last check: 2007-10-12)
		As far as coil taps, I love having both a humbucker and single coil available but just hate the output drop.
		I have a Bart MMC that is wired for parallel or series (this is not the same as coil tapping, BTW) I find it useful it's not a huge difference, but you can definately tell the difference.
		What has been called a coil tap switch by most manufacturers is in fact a switch that shuts off one of the two coils of a humbucker.
	www.musicplayer.com /cgi-bin/ultimatebb.cgi?ubb=get_topic;f=5;t=013447;p=1 (1151 words)

	Crystal Sets 2, How To Make A Crystal Set, Short Wave, Denco PCC1 Coil, Repanco Coil, Set Construction
		The tapping points on the coil allow the set to be tuned to different frequencies by adjusting the position of tap B. Tap B would be connected to the coil at differenty positions by way of a crocadile clip.
		The coil can be seen inside the case, it is 70 turns of 30 guage enamelled copper wire wound around the centre of a toilet roll and tapped every 10 turns, by scraping off the enamel insulation and making a small twist.
		The coil is of approximately 70 turns is wound on the centre of a toilet roll, and has tapping points at 10 turn intervals.
	www.arar93.dsl.pipex.com /mds975/Content/crystalsets2.html (3378 words)

	Front end design of antenna (Site not responding. Last check: 2007-10-12)
		If an antenna is connected to the top of the coil L, the antenna will load the coil so the Q will be low at this point and the selectivity will be poor.
		The antenna is connected to the coil L at a tap-point.
		I have made two ORCAD PSPICE-simulation where the tap point is at top of the coil (RED curve) and on where the tap point is at 20nH from the cold end (GREEN curve).The input is 1uV and I have measured the voltage into the amplifier (the voltage over resistor R).
	hem.passagen.se /communication/antenna.html (823 words)

	Articles - Humbucker (Site not responding. Last check: 2007-10-12)
		Humbuckers have increased output, and because the two coils are reversed polarity, noise and interference is essentially ´canceled out´.
		Coil split turns on when potentiometer is pulled out and reverts back off when it is pushed in.
		Note: this is often wrongly referred to as "coil taps".
	www.jazzbit.com /articles/Humbucker (849 words)

	My MF/LF Antenna Tuner
		The variometer unit has a number of taps on the coil, and I had already calculated that by using a combination of these taps and the variometer itself, I could cover all the frequencies I wanted to cover.
		One is in the green wire running from the smaller ceramic insulator to the input side of the loading coil, and the other is in the clear Polyethylene insulated wire (RG-8 center lead) running from the output side of the loading coil through the center bolt of the large ceramic bowl insulator.
		Above the switch are several standoff insulators, which support a cutout switch for the LF loading coil and a position for an RF ammeter (to be installed) and space for the RF ammeter bypass switch (to be installed).
	w5jgv.com /variometer3/variometer3.htm (1853 words)

	Project Guitar :: How to determine the color code for an unknown pickup
		I draw two coils and note where the bridge is and where the neck is. That may seem silly, but it helps me to visualize what I'm doing.
		To test each coil, tap the long side of a metal screwdriver all along the magnets on the top of one coil.
		I know that the White and Blue wires are for the other coil, but I do not know what the correct phase is. I alligator clip the probes to the White and Blue wires and tap the coil closest to the neck now.
	www.projectguitar.com /tut/pickupwiring.htm (466 words)

	Crystal Radio Antenna Stuff (Site not responding. Last check: 2007-10-12)
		Wind the coupling coil on approximately the same diameter core as the main tuning coil, using about one turn for every six in the main tuning coil, and then put it in line (on the same axis) with the main tuning coil, with the ability to move them apart.
		The closer the antenna is tapped to ground on the coil, the higher the frequency.
		I used a coil of about 5 uH in parallel with the 160 pF section of one of the little polyfilm tuning capacitors, attached the antenna to one end of the tank circuit, and the ground to the 60 pF section of the capacitor.
	www.thebest.net /wuggy/antenna.htm (5078 words)

	Unofficial BMW Bulletin Board : Oil drain plug... stripped.
		Most auto parts stores have self tapping plugs, I used a M12-1.75 single over,with a new plug gasket and it did not make much of a mess.
		Tapping has to be done regardless of the finishing procedure you choose for the plug.
		Be sure to install a new sealing washer on the drain plug and torque to 27 lb-ft. If you remove the oil pan, use a new gasket and torque the 6 mm [10 mm hex] attaching screws to 7 lb-ft when you reinstall it.
	www.unofficialbmw.com /cgi-bin/ultimatebb.cgi?ubb=get_topic&f=1&t=003686 (1713 words)

	Lindy Fralin Pickups : PAF Humbuckers - The Finest Guitar Pickups Available Today
		The coils are in phase to a guitar amp, but out of phase to the "hum" in the air.
		Other options include coil tap or Gibson style braided shield wire and outputs from 7.5 K to 10.0 K. All of our humbuckers are wound with 42 Plain Enamel like the old P.A.F. ’s.
		Our coil tap models are designed to be hum canceling when the tapped humbucker is combined with a Strat reverse middle.
	www.fralinpickups.com /humbuckers.asp (449 words)

	CW Transmitter: 30/20m modifications
		COIL SURGERY: The first stage was to modify the pi-net coil for 30m and 20m operation.
		To the existing halfway tap on this originally 80m 27-turn pi-net coil, I added a further tap 6 turns from the end for 20m, and one at 10 turns from the end for 30m.
		The two small relays next to the coil (fl one underneath, white one on top) select 1 of the 4 taps according to the required band.
	www.hanssummers.com /radio/cwtx/30m (669 words)

	Re-Thread tap kit for oil pan, 1/2 - 7/16 Hows this work? - Chevelle Tech
		What is in the way,that causes you to need a narrow tap or tap handle?You were able to get the drill in there, but it sounds like something is in the way of the tap handle.Please explain.
		It is a narrow shaft made to hold a tap with a square machined on one end for the tap handle.
		My 3/8" tap just slides right through the hole, I drilled it out larger than that and a 7/16" tap just fits in the entry of the new hole but I cant get it to thread and I think I may even need to go one larger from trying to get the 7/16" to work.
	www.chevelles.com /forums/showthread.php?t=40650 (969 words)

	Guitar Notes Discussion Forum: Ibanez RG w/ stock V8,V7, S1 pups HELP!! (Site not responding. Last check: 2007-10-12)
		North Finish on Pickup coil bobbin #1 is wired to South Finish wire on Pickup coil bobbin #2 with studs.
		A lead wire comes out from these two wires as a Hot and is used as a coil Tap to shut off coil bobbin #1 or coil bobbin #2 and the pickup becomes a single coil pickup.
		Coils Tapped are Hum Bucked by Center Coil.
	www.guitarnotes.com /ubb/ultimatebb.php?ubb=get_topic;f=3;t=000201 (628 words)

	Guitar Tricks - Another pickup question
		I though a coil tap did switch between series and parallel.
		A coil tap switch simply disables one of the humbucker's coils, usually by shorting it out.
		Parallel connection of a humbucker's coils gives you half the output voltage, half the impedance, and something close to a single-coil sound, while still cancelling hum.
	www.guitartricks.com /forum/showthread.php?t=8429 (515 words)

	VWvortex Forums: Tapping new 10 mm threads , what size hole do I create first
		So i got my 10mm tap out to tap some new threads i the head to place the helicoil in.
		The existing /messed up theads are 8mm, but my tap wouldn't catch since the hole is to small.
		And the tap is marked for what size hole to drill.
	forums.vwvortex.com /zerothread?id=1985761 (528 words)

	Ernie Ball Forums - Axis coil tap
		On the axis, this would be the white coil of the bridge pickup and the fl coil of the neck pickup or the fl coil of the bridge pickup with the white coil of the neck pickup.
		There doesn't seem to be anyway of getting the two most desired combinations (both inside coils for a strat like sound or both outside coils for a tele sound) that is hum cancelling.
		With the two coils of the HB in parallel you'll aproximate the split sound fairly closely and the big advantage is that you won't get the hum of a split coil so you can use it in noisy/higher gain situations.
	www.ernieball.com /forums/printthread.php?t=4327 (727 words)

	Carter AFB Electric Choke
		This would imply that you shouldn't tap your coil wire, as it's only ~9V when the car is running.
		In addition to tapping the coil wire, there are at least three other options for providing power to the choke:
		Although this is the most direct connection to the IGN terminal, you'll have to route the wire clear around the engine compartment.
	www.chip.com /buick/techtips/choke.html (493 words)

	[No title]
		The 10 meter tap on the 15/10 meter coil is 4 turns from plate tuning capacitor end of coil, and 4 3/4 turns from the bandswitch 15 meter end of coil.
		The 10 meter coil tap is 3 3/4 turns from the plate tuning capacitor end of coil.
		The connection between the coil and the bandswitch is made using a silver plated strap (1/4" wide).
	bama.edebris.com /manuals/heath/service/mods (2422 words)

	Anyone wanna teach me how to use a helicoil? - Corvette Forum
		Drill out the bolt/hole, tap the hole, install the insert and you are back to the starndard size bolt and tread set up.
		Heli coil inserts work with cast iron, steel and aluminum as far as I know.
		This is an old set I have had for 10+ years bought from NAPA for standard screwed up head bolt threads(7/16-14).
	forums.corvetteforum.com /showthread.php?t=483938 (699 words)

	poopie: I need some help installing helicoil threads??? - Corvette Forum
		You can tap to a bigger size but a good heli-coil repair is better.
		Helicoils require special taps, which have the same threads/inch on the outside as on the inside.
		Drill, tap, insert and be done with it for good.
	forums.corvetteforum.com /showthread.php?t=174289 (649 words)

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