[sdiy] TL072??

Gordon JC Pearce gordonjcp at gjcp.net
Thu Jun 12 10:58:49 CEST 2014


On Thu, Jun 12, 2014 at 04:33:17AM -0400, Dan Snazelle wrote:
> 
> its funny how modern opamps/logic/etc chips in general are so good about just working chip after chip in a project run whereas. part variation in bjts is quite large from high to low but you use enough and you select the range you are after. 

I know a guy who fixes valve amps.  He reckons that any two el-cheapo Chinese EL34s out of the fridge-sized crate he buys them by are a far closer match than the "super matched" pairs he used to buy from Mullard...

-- 
Gordonjcp MM0YEQ




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