[sdiy] 1K or 2K Tempco ?

[allenre at umich.edu]

I heard that this company in the US will do small runs of resistors with the
same spects as Q81 tempcos:

http://www.precisionresistor.com/

I haven't tried them, but I am interested in pitching in to order some in bulk. 


Ryan


> Hi,
> Oakley Sound Systems have 1K 3500ppm 1% Tempcos for sale
> www.oakleysound.co.uk at UKP 6.00
> 
> I now have 1870 ohm 1% 1W 3500ppm Tempcos for sale, as used in ARP modules.
> These have been custom manufactured and are a similar price - UKP 7.00.
> Contact me at info at emulatorarchive.com for information.
> 
> I will also have 100 and 200 Ohm 1% 1W 3500ppm Tempcos for ARP2500 modules,
> and I might get some 1K 1% 3600ppm Tempcos manufactured for SSM VCO's. I
> have found a friendly UK manufacturer who can make high quality Tempcos at
> smallish volumes (under 50). As I need a few for my DIY projects, spares one
> are available for minimal cost.
> 
> Farnell and probably other suppliers sell 1K 3000ppm PTC's for around UKP
> 2.00. These are okay for filters if you don't need spot on tracking of self
> oscillation.
> 
> Regards
> Rob
> www.emulatorarchive.com
> 
> 
> Hi again,
> 
> Still looking for a 1K Tc for the SEM module.
> But I just noticed that  Midwest Analog sells
> 2K +3500ppm/°C... So I was wondering if
> this could be used in the SEM VCO instead,
> and if other components values need to be
> modified accordingly, or if the 10K trimpot
> (T6) is enough to compensate the difference ?
> 
> Thanks,
> JB
> 
> 
> 
> 
> 
>