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Post by ccoleman on Sept 4, 2006 15:13:37 GMT -5
I tried hooking up my superswitch to the two HB's but something was wrong with my self-made wiring schematic such that it wasnt able to accomplish the combos I wanted to go after.
So I looked around in the schematics archive but didnt see if there is a schematic already existing for using a superswitch to connect two 2-wire HB's to make five of the six possible parallel and serial combos. (B, B+N, B*N, B*-N, N).
Do we already have a schematic that shows how to wire the superswitch for these five combos ?? Maybe I missed it somewhere..
Thanks guys.. u rock !
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Post by sumgai on Sept 4, 2006 19:55:38 GMT -5
cc, No, you haven't missed the gravy train, it's still at the station house.  What you're contemplating is using the 5-way blade switch to reverse the polarity of one pickup. This is easy for a superswitch. While I could do the exercise for you, I wanna see if you've been paying attention these last few weeks, so it's..... POP QUIZ TIME!  Some hints to get you started: 1) Start by thinking of how each pickup lead will be connected to either hot or ground. You know that the ground for one of the pickups will always be grounded, so you can make that permanent, no switching necessary. 2) Under what conditions must the hot for that pup go to the output? Draw lines accordingly. Do the same for when the hot lead goes to the other pup, for series connections.... connect it to the appropriate terminals on those other poles. 3) For the other pup, each lead must be connected to the "common" terminal of one (of the four) poles. The selected terminals of these poles will either go to the output, or come from the first pup, so be prepared to "think" in two directions as you plan out the signal flow for this pickup. 4) At this point, you've already drawn over half your needed schematic! Fill in the blanks, and double check your work. 5) Reality check - have you avoided hanging hots? And shunted coils? 6) It can be done, I just did it, in less than 10 minutes. ;D And I needed only 3 of the 4 sections of the superswitch.  Let's compare notes in a few days, eh?  sumgai |
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Post by ccoleman on Sept 4, 2006 21:05:41 GMT -5
thanks man! I just logged in to post that I found a way to do it ! I used 4 sections of the switch so I am going to optimize it down to 3 if I can and then check again for hanging hots and shunted coils.. back soon
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Post by sumgai on Sept 5, 2006 13:53:33 GMT -5
cc; You're on the verge of a promotion around here, if we ever set up ranks besides "Gawd" and "all others". ;D Seriously, good job. Make a nice drawing, and let's see it. Soon as you do, I'll post mine. One caveat, though. Because of the way I tend to think about layouts and such, I ordinarily place the Neck pup as the "least switched" unit in the chain. For our discussion here, I'll be reversing the Bridge and Neck when it comes to naming the plausible combinations that are phase-reversed. Instead of B*-N, my combo will be labeled N*-B. Call me presumptious, but I do presume that's OK with you. And yes, it can be done with just three sections, but let's face it, if your circuit works, and you don't need that fourth section for anything else, then you've already scored the touchdown.  Don't give yourself Excedrin Headache #4 over trying to score that extra point.  More often than not, simplicity trumps complex elegance. sumgai |
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Post by ccoleman on Sept 7, 2006 1:25:14 GMT -5
 Edit : buggy wiring layout removed !! |
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Post by ccoleman on Sept 7, 2006 14:37:08 GMT -5
DOH... I THINK there are a few bugs in the wiring layout... can anybody confirm ?? ill be back soon iwth a corrected version !
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Post by ccoleman on Sept 7, 2006 15:36:43 GMT -5
This is fixed and should work perfectly..! Going to wire it up tonight and I will post mp3's...  sumgai how about posting your solution now ?? |
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Post by sumgai on Sept 8, 2006 0:44:20 GMT -5
cc, I can't post anything right now, my eyes are still recovering from the spaz attack they just suffered!  After a couple of good, stiff shots, I'm gonna tackle that thing again, and see what you did. Or go blind trying! ;D Be back later tonight. (Sorry for the suspense, just checking things out while taking a quick break for din-din. ) sumgai |
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Post by sumgai on Sept 8, 2006 13:19:13 GMT -5
OK, so it's tomorrow, for those of you keeping track. Sheesh! ;D cc, here's my re-drawing of your sketch. In drafting this up, I noted that your drawing didn't match your stated requirements, the order of combinations. I then re-read your earlier post, the one with the "terminal connectivity" chart, and that is also reversed from your first post. So be it, here's how you drew your schematic:  Now let's take a gander at my interpretation of your request. A bit more simple, eh?  Which would you rather build? Note that I've followed your second statement of combo switching order. Note also that I decided that it was just as easy to call out the "out-of-phase" reversal the same you did - I didn't swap the Neck and Bridge around. But enough "bragging", that's not why you're here. I'm gonna do two things for you, right now. First, I recognize that you drew something, period. You at least put pen to paper, and tried to make your idea work. And you even got it posted. +1 for effort, right there. Other long timers here will agree with me, we value effort over nearly all else, this being a very "do-it-yourself" oriented community. ;D Enough platitudes, it's time to take a lump or two.  Well. minor lumps, to be sure. One would be the very crude drawing. But that will only get better with experience, right? The only other thing is to see that when you write out a "logic" chart like you did, it should pop out at you that one of the pickups has one lead that is never be switched off of hot, or off of ground. In your case, you did that, but you ended up with B+ being the common point. To avoid a hanging hot, you used a switch section. Good enough in itself, but you should have reversed the chart to give you a common 'minus' on one of the pups. No one has yet complained about extraneous noises due to hanging grounds! ;D That's what I did in order to avoid a noise/hum issue, I just left Neck minus at ground all the time. It so happens that I also saved a switch section, but that wasn't the original goal.  Overall, if I were still a Professor at school, I'd have to say "points for making the attempt, but two points off for switching a common hot instead of connecting a minus to ground permanently. And 2 more points off for the 'rough draft' submission". No A for you, but certainly a solid B+. Keep it up, pretty soon it be hard to distinguish you from the rest of us ol' farts. ;D sumgai |
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Post by UnklMickey on Sept 8, 2006 13:19:38 GMT -5
Sumgai,
do you have a mental block with position 1 ?
this is twice in a row. different problem, but on position 1 again.
unk
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Post by sumgai on Sept 8, 2006 13:41:04 GMT -5
unk, Now that was strange. AutoCAD just let me place a line onto a different layer than all the other lines. (I use a convoluted layer system, left over from my days as a draftsman. Don't ask.) I could see it plain as day in the ACAD drawing, but when I "plotted" it to a GIF file, the line disappeared. In this case, I'm more guilty of what I accuse others of doing - not double-checking my own work! D'oh!  Fixed with an updated schematic. Sorry 'bout that. sumgai |
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Post by JohnH on Sept 8, 2006 15:33:49 GMT -5
Sumgai - you could save 0.0256 cents by deleting the wire that forms a connection of bridge to ground in position 5.! John |
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Post by UnklMickey on Sept 8, 2006 16:08:52 GMT -5
Sumgai - you could save 0.0256 cents by deleting the wire that forms a connection of bridge to ground in position 5.! John lol no John, that's insurance against the build up of static charges on the bridge coil. rofl (i can play too!) unk |
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Post by sumgai on Sept 8, 2006 19:02:03 GMT -5
John See my previous post (to ccoleman) wherein I quoted Guitar Wiring Law #4, to wit: No one ever suffered hum or noise due to a hanging ground!'Nuff said. ;D sumgai p.s. Left over from that same "flip-flop" operation that I esplaned to unk. I'll leave it in for now, and eliminate it later.  |
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Post by UnklMickey on Sept 8, 2006 19:28:37 GMT -5
Sumgai,
i think you're missing the ironic compliment.
since his only creative criticism was "you could save 0.0256 cents by deleting the wire ..."
what else did he find that needed improvement?
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Post by JohnH on Sept 9, 2006 2:36:35 GMT -5
No one ever suffered hum or noise due to a hanging ground! In Australia, we always hang from the ground - its a sort of 'down-under gravity' thing. John |
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Don't give yourself Excedrin Headache #4 over trying to score that extra point. 
More often than not, simplicity trumps complex elegance. 
