reading resistor values

[no one ever]

tell me what a lone purple band means?

[niftydog]

Purple represents either the number 7, a multiplier of x10M, or a tolerance value of 0.1%.

Since it's fairly unlikely (although technically possible) that you have either a resistor value of greater than 10M or a 0.1% tolerance resistor, I'd say you're reading the bands wrong.

What are all the band colours in order?

[AL]

http://www.rdrop.com/users/tedpet/resistor.htm

http://www.dannyg.com/examples/res2/resistor.htm

AL

[petemoore]

Ask the expert, your DMM, set to resistance measurement.

[no one ever]

Purple represents either the number 7, a multiplier of x10M, or a tolerance value of 0.1%.

Since it's fairly unlikely (although technically possible) that you have either a resistor value of greater than 10M or a 0.1% tolerance resistor, I'd say you're reading the bands wrong.

What are all the band colours in order?

just a purple band. here's a picture:

[Strat Cat]

That's not a resistor. It's a jumper. It shorts two holes in the circuit board together.

[no one ever]

That's not a resistor. It's a jumper. It shorts two holes in the circuit board together.

oh, ok. thank you guys for all your help.

[Paul Perry (Frostwave)]

That's strange though, all the jumper zero-ohm resistors I have seen look like that, but with a BLACK band (whihc would make sense when u think abou it, black=0).
I'd pull one end out & measure it, who knows, might be a resistor lacking a couple of bands, the band for a jumper should be exactly in the middle as well.

[no one ever]

That's strange though, all the jumper zero-ohm resistors I have seen look like that, but with a BLACK band (whihc would make sense when u think abou it, black=0).
I'd pull one end out & measure it, who knows, might be a resistor lacking a couple of bands, the band for a jumper should be exactly in the middle as well.

hmm, that is cause for thought.

also, do these resistors have a place in my wah pedal? and what is the clear metal thing? i'm thinking i'm colorblind, but ...



their labels measure into the mohms!

[niftydog]

the clear, orange/clear type thing is a signal diode, most likely a 1N4148 or 1N914.

The other resistors are 390 ohm (orange = 3, white = 9, brown = x10) and 1.8 Mohm (brown = 1, grey = 8, green = x100,000) from what I can make out. Both with 5% tolerance.

If you don't trust me, or yourself for that matter, pull out the DMM and measure them. Just remember that relaible readings can only be made with the component removed from the circuit. This means desoldering and lifting at least ONE of the legs of a resistor before reading it.

[no one ever]

the clear, orange/clear type thing is a signal diode, most likely a 1N4148 or 1N914.

The other resistors are 390 ohm (orange = 3, white = 9, brown = x10) and 1.8 Mohm (brown = 1, grey = 8, green = x100,000) from what I can make out. Both with 5% tolerance.

If you don't trust me, or yourself for that matter, pull out the DMM and measure them. Just remember that relaible readings can only be made with the component removed from the circuit. This means desoldering and lifting at least ONE of the legs of a resistor before reading it.

are these values commonplace in wahs though? hold on, i'm going to go read a schematic

[sir_modulus]

the 390 for sure is...dunno bout the 1.8M one. As for the resistor...it will be a jumper...it's in a wah pedal...btw...what brand of wah pedal is this?

Cheers,

Nish

[Pedal love]

It looks purple but I'll bet its black. Its a zero ohm resistor just like paul said. this must be a modern dunlop crybaby, with a stock input buffer.pl

[petemoore]

relaible readings can only be made with the component removed from the circuit.
 For the purposes of just hooking up the DMM to resistors wherever they are this is true.
 Circuits can be analyzed to determine if a resistor should be pulled for accurate measurement.
 If just measured in cct. and the reading is what the resistors color code says it is, within whatever tolerance, 99% or better of the time the reading is accurate.
 If the reading is lower, one end must be pulled or some resistor math may be applied to find the missing value.
 Best just to pull the lead up when in doubt.
 If it shorts right across there, and doesn't 'hookup' anywhere else...