Korg Poly800/EX800 Users

On Wed, 28 May 2008, korgpolyex800 wrote:

> I will see if I can measure the current but at low current draws the 
> meter may not be entirely accurate. I'll give it a go though.
===========

a good digital meter should be able to measure in the uA range.


> According to the datasheet, if I take CS1 high or CS2 low before the 
> power supply drops from 5V to battery 3V, then the current draw will be 
> 2uA (typical) up to 100uA (max). But the datasheet seems a bit non 
> specific about the timing of the chip select lines being at correct 
> levels prior to the supply dropping to 3V.
==============

who makes the chips? try calling their tech info number, and you may be 
able to reach a product specialist... then you can ask what factors 
determine the current draw, and how to decrease it.


> Zoinky makes a good point though. The button cell most certainly can be 
> replaced by two AA batteries. I like the button cell because it's 
> guaranteed not to leak all over the insides of your precious synth's.
===============

i've seen coin-cells leak... they just have less "juice" than larger 
batteries.


> I cringe thinking about the number of Poly's that have been sitting in 
> storage with batteries slowly decomposing all of the PCB's. I bought one 
> on ebay specifically because the case, joystick etc was in perfect 
> condition while the insides were completely acid wrecked.
================

an acid wreched poly800... you make it sound like that's not good ;)



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