[sdiy] Moog Voyager - No Osc Sound

Mike Beauchamp list at mikebeauchamp.com
Sat Feb 9 02:47:46 CET 2019


On 2/6/19 5:34 PM, Richie Burnett wrote:
>> Latent and incremental ESD damage is a thing and resulting degraded, out-of
>> spec performance is just as common as catastrophic fails.  One of the earliest
>> (and easiest to verify) examples are discrete RF bipolar transistors...
> 
> Solid state laser diodes (as used in CD/DVD burners) are also apparently very susceptible to static damage. I used to work for an electronics company that used low power laser diodes in one of their assemblies, and it was a sackable offense to walk into the production area without first putting on your antistatic lab coat and testing your heal grounding strap, etc...
> 
> They had previously been bitten with product recalls due to gradual degradation in laser diode performance attributed to static damage during the assembly. Once the assembly process was tightened up, there were no further failures of this type.

Thanks for the tips and experience guys! I've soldered a lot of TL074's 
on the bare kitchen table with no hygrometer in sight and wearing a 
sweater depending on the month. Never knew "latent and incremental ESD 
damage" was a thing.  Will keep an eye on some of those modules!

Mike


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