Current Limiting Resistor

soupbone · December 20, 2013, 07:26:05 PM

I have an old Maxon made TS-9.I put a bright blue led in it,but I wan't to make the led just a touch brighter.I used my dmm to find the clr resistor.If I'm correct it's the 8.2k res. above the 5 & 6 pads.Is this correct?I looked at some schematic's,and none of them had an 8.2k res.?Whiskey Tango Foxtrot?!

mth5044 · December 20, 2013, 09:34:37 PM

It's buffered bypass, but looking at the schematic the LED should only connect to the power supply through some of the switches on the jacks and on the other side to a resistor. Seems it should be 3k6, but it might be different.

Can you follow the LED and see what resistor it connects to? That would be the easiest way.

soupbone · December 21, 2013, 07:01:11 AM

Quote from: mth5044 on December 20, 2013, 09:34:37 PM
It's buffered bypass, but looking at the schematic the LED should only connect to the power supply through some of the switches on the jacks and on the other side to a resistor. Seems it should be 3k6, but it might be different.

Can you follow the LED and see what resistor it connects to? That would be the easiest way.

I looked at an original schematic,and it is a 3.6k res!You are correct sir! :icon_biggrin:The resistor to change for making the led brighter is in the holes marked; 4&5. I changed mine to 2.2k.Perfect!One weird thing is I have two Maxon Made TS-9's,and they're both have a 3.6k in that spot.I have three Ibanez made TS-9's,including the 30th anniversary,and they're all 8.2k's!w.t.f
?

GibsonGM · December 21, 2013, 08:32:27 AM

They probably had a ton of 8.2K resistors left over from something and needed to get rid of them ;o)

Or, there was a design change in mid-production, and they wanted the LED to be a bit dimmer?
I used to make mine SUPER bright, but got sick of that - you can't see what's going on on the floor if the LEDs are too bright...

deadastronaut · December 21, 2013, 09:59:44 AM

^ me too, my retinas have had it, i tame them down now too..

tubegeek · December 21, 2013, 05:59:49 PM

Quote from: deadastronaut on December 21, 2013, 09:59:44 AM
^ me too, my retinas have had it, i tame them down now too..

The gold plating on your helmet visor is probably wearing out and letting too much starlight through.

soupbone · December 21, 2013, 09:47:12 PM

You guys are funny

deadastronaut · December 22, 2013, 09:29:23 AM

Quote from: tubegeek on December 21, 2013, 05:59:49 PM
Quote from: deadastronaut on December 21, 2013, 09:59:44 AM
^ me too, my retinas have had it, i tame them down now too..

The gold plating on your helmet visor is probably wearing out and letting too much starlight through.

yeah its that cheap-ass nasa stuff again i'm sure they buy their gear from the pound shop...

News:

Current Limiting Resistor