[sdiy] Beckman chips

[harrybissell]

Back in the day they could have been machine inserted along with all the

DIPs... just easy for layout.

These networks are seldom any better than 5%.  Ratio matching 'may' be
better, thermal tracking should be much better than individual
resistors.
OTOH you don't normally need to worry about resistor temp matching...
470 ohms is probably too low for almost all analog uses.

They might be nice for seven segment LED dropping resistors...

H^) harry

Peng wrote:

> I tested them with a DMM and they are eight seperate resistors in each
> and the resistance is 470 ohm and 220 ohm. Looks like the date is
> 1976. Umm... I wondered hat they were used for. Obviously I could use
> them instead of individual resistors, but they wouldn't save that much
> space. Just curious. P.v3
>
> Paul Schreiber <synth1 at airmail.net> wrote:
>
>      Those are standard *resistor* arrays 47 ohm and 22 ohms
>      :) Paul S.
>
>           ----- Original Message -----
>           From: Peng
>           To: SDIY
>           Sent: Saturday, February 26, 2005 1:05 PM
>           Subject: [sdiy] Beckman chips
>            I have some old Beckman chips, too. I've never
>           found any info on them so... any ideas ? I have
>           Beckman 898-3-R470 and 898-3-R220. Both are 16 pin
>           white chips.This is the best info I've found so
>           far:
>           http://catalog.thedigitalshop.net/resist/rndi.html P.v3
>           ---------------------------------------------------
>           Do you Yahoo!?
>           Yahoo! Mail - Easier than ever with enhanced
>           search. Learn more.
>
> -----------------------------------------------------------------------
> Do you Yahoo!?
> Yahoo! Mail - Find what you need with new enhanced search. Learn more.