Getting a bit bored : Intelligent Lonestar Strat By Roth

[Deleted]

Now if only i could change it so that it has two 47nF .. together to make it 23n5F 
I basically looking at this to make it smaller, taking out one POT and 470K Resister


Basically i free a pole, by making Bridge/Neck always hooked to the output and controlling the GROUND part.
This let me use it for the 470K resister (saving one) as for the Pot 250K+250K=500K 
Sad i couldnt use two 47nF .. 1/((1/47)+(1/47))=23n5F as its easier to have two caps the same than buying two different.

I did wounder if you could!! 

but wasnt sure what the effect would be

[newey]

The statement that "The HB sees 500K, but the single coils see 250K" makes me question the "intelligence" of this design.

A 500K volume pot in parallel with a 500K tone pot means that the HB actually "sees" 250K, not 500K. (1/R_t=1/R₁+ 1/R₂ . . .1/R_n)

The SCs will "see", not 250K, but 123.04K, by the same calculation but including the 470K resistor with the 500K Vol pot and the 250K tone pot.

Without the 470K resistor, the SCs will "see" a resistance of 166.67K, thus the difference with the resistor added is only a difference of 43.63KΩ. A standard guitar pot will usually be made to a 20% tolerance, meaning it could be plus or minus 50K for a 250K pot, plus or minus 100K for a 500K pot. Thus, the difference in total resistance with vs. without the resistor is well within the tolerance of the pots used- and probably won't be an audible difference.

There's a lot of fooling around with resistors for what seems to me to be very little benefit.

Also, we recently discussed tone cap values, and I fail to see why one would use a .022 cap for the HB and a .047 for the SCs- it would more typically be the other way around.

[Deleted]

250K till the 5th position then its 250+250 and the 22nF

also the Dash lines as they are the same POT. just two wafers


The Task was more to reduce what was needed, but give the same effect


NOTE: This isnt MY DESIGN its ROTH GUITARS
I dont like Fenders, cheap and nasty but they GUY made MILLIONS from the guitar designs 
this circuit was driving me NUTS with using two 470K Resisters and the Pot that is only used ONCE!

[sumgai]

I'm not going to get into the pluses and minuses of this circuit, newey's already correctly pointed out the shortcomings. But what I wanna know is, who's gonna blow the whistle on the resistors' values?

I can't claim a perfect 100% clarity of eyesight, so I'm hesitant to term the first resistor color band as Yellow. Could be, but also might not be, who cares. But that third band, the Red one?   When I learned the resistor color code, Red meant "2", not "4".  Or in the case of a multiplier, it meant "times 100", not "times 10,000".

Did I not get the memo, once again? Because I see a pair of "x700" Ohm components, not a pair of "x70,000" Ohm components.

Which neatly goes to making my case for designing by schematic in the first place, and then making a physical layout afterwards.  Were there no pictoral image in the first place, I would've taken ange's design as gospel, and been happy.

BTW ange, nice job of reducing the parts count, but.... But you left not one but two hanging hots, and one of those on a Humbucker - ouch!  I'd've kept the parts in place, if for no other reason than to not introduce the likelyhood of hum into the signal path.  But that's just me, the usual disavowal remains per force: YMMV

HTH

sumgai

p.s. That fourth band, the one that looks like Gold to me?  That indicates a 5% tolerance in value.  Do we really need to be that close to an exact match in value?  This tight of a tolerance translates to "expensive" when compared to normal run-of-the-mill resistors.

[frets]

Sumgai, I thought the same thing. I was surprised to see such a high k level. It was obvious they meant 4.7k. It would sound pretty thick with 470k’s on that circuit. It’s kinda funny that they called it the “intelligent design.” It also looks like the resistors at 4.7k are mimicking a Greasebucket circuit. But we’ve all been burned by an inaccurate diagram.

[Deleted]

Dec 27, 2019 0:06:54 GMT -5 sumgai said:

BTW ange, nice job of reducing the parts count, but.... But you left not one but two hanging hots, and one of those on a Humbucker - ouch!  I'd've kept the parts in place, if for no other reason than to not introduce the likelyhood of hum into the signal path.  But that's just me, the usual disavowal remains per force: YMMV

Well not my design just wanted to reduce it..

How is the hum "hot", need both end to make a circuit. Can't even get feedback down the ground till the bridge comes in to play at 4&5.

----
Apple is great because it REUSED MEMORY from the system, the only real tech smart wise they did personally

once wrote a fancy program that Translates from English to French, to do the things i couldn't. Put in all the things i couldn't see ' . etc but this was in AMIGA days, what means as soon as the program got too big it RESET! no warning .. the software couldn't be written as it was too big, looped it as much as i could to save space (too many software programmers have too much space to write now, and the art of keeping it small to run better has gone) I Screamed at a person who made 6 PAGES worth of code to just do Logic Gates Test, i looped it and got it down to 2 pages.  Even bad programming, and electronics adds a bit of factor to the world and waste.
I once got pulled over by the police for Hugging the white lines while driving (UK has a LOT of Bends on the road) the idea, like sking is to find the shortest distance , and watch the people speeding go by.

The Two Tone, where you have Pickups on one side of a S-Type Switch (Dam a switch DESIGNED for guitars) and the other side you have two pots when i personally think one will do and just bridge it (like Yamaha only has one) that is if you dont want a Master Tone

[Deleted]

Dec 26, 2019 11:40:13 GMT -5 @angeisbunny said:

Now if only i could change it so that it has two 47nF .. together to make it 23n5F 
I basically looking at this to make it smaller, taking out one POT and 470K Resister
I did wounder if you could!! 

but wasnt sure what the effect would be

This is what i wanted to look at, as a way to save.  Its cheaper to buy 2x47nF cap than it is 22nF+47nF (talking production wise and maybe 1p to us Normals) i should NOTE the two 250K Pots are LINKED and should have a DASH line between them.

So at Points 1-4 it shorts out the TOP 250K & 47nF (for single Pickup) and then what i was woundering (as even im not sure [as AC electronics are a lot different than DC the formulas like R=IV are based on DC]) 
so Point 5, Resisters are Summed and the Caps are Halfed, so 250K becomes 500K as TWO of them, changing at the same rate.
47nF and 47nF = 1/([1/47]+[1/47]) = 23n5F ahh near to 22nF really.  
Could Flip one of the 250K & 47nF around if one likes to be more next to each other than the other.