47e resistor?

[wesman26]

I did a quick search of the forums and couldn't find anything mentioning this.  I was looking at a schematic I found on the internet and I really want to build this pedal, but I see a resistor appear twice in it labeled "47e" and I'm unfamiliar with the labeling.  I did a quick google search and I found nothing consistent other than it might be a 47 ohm resistor of some sort.  I have no idea of the wattage, I don't even know if it's actually 47 ohms even, or 47k, hell it could even be 47M.  Any help will be greatly appreciated.


--Wes

[blooze_man]

A link to a schematic would help.

[wesman26]

Haha, I suppose it would, sorry about that.
http://analogguru.an.ohost.de/193/schematics/EH_BigMuffPi_OP-77.gif

[Liquitone]

I've always assumed E was the same as R but I might be wrong. only thing i could find is this bit on wikipedia;

For some 1% resistors, a three-digit alphanumeric code is used, which is not obviously related to the value but can be derived from a table of 1% values. For instance, a resistor marked 68C is 499(68) × 100(C) = 49,900 Ω. In this case the value 499 is the 68th entry of the E96 series of preferred 1% values.[1][citation needed] The multiplier letters are as follows:

Z        ×10-3  0.001
Y or R   ×10-2  0.01
X or S   ×10-1  0.1
A        ×100   1
B or H   ×101   10
C        ×102   100
D        ×103   1000
E        ×104   10000
F        ×105   100000

so that would mean 47E is the 47th entry of the E96 multiplied by 10000

first 47 entry's of the E69 serie
100, 102, 105, 107, 110, 113, 115, 118, 121, 124, 127, 130, 133, 137, 140, 143, 147, 150, 154, 158, 162, 165, 169, 174, 178, 182, 187, 191, 196, 200, 205, 210, 215, 221, 226, 232, 237, 243, 249, 255, 261, 267, 274, 280, 287, 294, 301

which would then make it 301x10000 making it 3.010.000 ohm=3,01MegaOhm.

correct me if im wrong on the info or calculations but this is all i could find about it. I can see myself making one mistake after another using this system, I think I'll stick to 3 band colour codes

[blooze_man]

Well the circuit is an op amp Big Muff. Looking at a different schematic of the same thing it shows 47k.

[wesman26]

Liquitone, I have to say your response was more thorough and informative than I deserve and I really appreciate it.

Can anyone tell me what results are like when using a 47k resistor instead of a 47E as Blooze Man suggested?

Edit:
Nevermind, I'll just get some sockets and test to my taste.  Thank you all very much!

[cpm]

47E is 47 ohms
I think i read in these forums that 'E' was like the initial for some german or dutch word??
anyway, R17 and R9 are 47 ohms for sure, by their use on the circuit.

[DiscoVlad]

Echoing everyone else with "they're 47 ohms", there's some gutshots from vintage OA muffs here: http://www.kitrae.net/music/big_muff_op_amp_history.html#Version4

[lopsided]

hi,
I have build this big muff (actually the next version, which diiffers only by the tone bypass switch).
I have used this schematic http://sovtek.webs.com/apps/photos/photo?photoid=77120320 It says 47R and it works fine.

Jakub

[CynicalMan]

E is used instead of R in all of analogguru's schems.