Subject: From: Date:

RE: [ECS] micro-redac and relays Mark Sekelsky Thu, 31 Dec 1998 18:16:03 -0600

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David,

Thanks for the resistor lesson.  The 2.2 didn't work but the 1K sort of
does.  With only a fuse in place there is about a 3-4" delay before the item
state changes to HIGH.  I assume this is residual power in the transformer.
With the 1K resistor in place that delay is 8-9" but it does change to HIGH
100% of the time.  I can certainly live with this but wonder if it means I
should be trying yet another resistor or not.

Happy New Year!

Mark S

-----Original Message-----
From: David Mccoll [mailto:dmccoll@intergate.bc.ca]
Sent: Wednesday, December 30, 1998 4:13 PM
To: ecs-list@netbloc.com
Subject: Re: [ECS] micro-redac and relays


Mark S
Your connections sound correct. Get it to work 100% before you add the fuse
and resistor. If the 10K resistor gives you trouble move down to a 4700 that
is a Yellow, Violet, Red, Gold. If that does not work then move down to a
2.2K or 2200 which would be Red, Red, Red, Gold. If that does not work then
go to a 1K or 1000 which is Brown, Black, Red, Gold.

Originally you said the power pak was 5V DC 150mA. What are you using now ?

Here is some gunk on resistors. This is very simple stuff but on the surface
it may look complicated. The Gold band is what is referred to as the
"tolerance" of the resistor and is usually the last band.

Gold is 5% -- most common tolerance
Silver is 10% -- not too common

The first 3 bands are the value.  Here is the way I learned to calculate it.
Bad  ---  Black -- 0  -- .0
Boys  --- Brown -- 1 -- 0
Rape --- Red -- 2 -- 00
Our  --- Orange -- 3 -- 000
Young --- Yellow -- 4 -- 0000
Girls --- Green -- 5 -- 00000
But  --- Blue -- 6 -- 000000
Violet ---- Violet -- 7 --0000000
Goes --- Gray -- 8 -- 00000000
Without  -- White -- 9 -- 000000000

The first 2 bands are the value and the third band is the multiplier which
is the number of 0's to add after the value. So 4.7 K.Ohms = 4700 Ohms =
Yellow, Violet, Red and Gold for the 5% tolerance. The 10KOhm resistor would
be Brown, Black and Orange the multiplier is usually assumed to be 5% Gold.
A 100 Ohm resistor is Brown Black Brown and a 10 Ohm is Brown,Black, Black

Keep up the good work.

DAvid M

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