Re: Opto resistor replacement?

John:

If you can't find any 180 Ohm resistors, you could use
two 390 Ohm in parallel or two 100 Ohm in series and
get close enough for this circuit.

-Mark
--
http://pinballpal.com
"John P. Dayhuff" <pinhead67@xxxxxxxxxxxxx> wrote in message news:veffj.3022$6%.2267@xxxxxxxxxxxxxxxxxxxxxxx
What would be a more common substitute that I could use?

Thanks again,

--
John P. Dayhuff
Battle Creek, MI.
(269) 979-3836

Still looking for:
E.M. Charlie Angels pinball machine,$100 finders fee.....


<murphyjjr@xxxxxxxxxxx> wrote in message
news:2dfa3954-a269-4ff5-85e0-c3209e5477f5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Jan 2, 11:06 pm, murphy...@xxxxxxxxxxx wrote:
On Jan 2, 10:49 pm, "John P. Dayhuff" <pinhea...@xxxxxxxxxxxxx> wrote:



I'm working on a Sega game that has what I think is a bad Resistor on
the
opto trough board. This is the tiny board that only has one LED on
it.
I've replaced the entire board with a known working one and my problem
goes
away. So then I've also replaced just the LED and I still have the
problem, so the only thing left is the resistor which is VERY tiny and
labeled " 181 ". Is there some sorta replacement that I can sub in
its
place since I dont have a clue as to where I can get a replacement for
it.
Anyone atleast know the value or have any ideas of what to replace it
with?

Thanks,

--
John P. Dayhuff
Battle Creek, MI.
(269) 979-3836

Still looking for:
E.M. Charlie Angels pinball machine,$100 finders fee.....

The first two digits represent the two digits in the answer. The third
digit represents the number of zero's you must place after the two
digits. The answer will be OHMS. For example: 334 is written 33 0 000.
This is written 330,000 ohms. The comma can be replaced by the letter
"k". The final answer is: 330k.
222 = 22 00 = 2,200 = 2k2
473 = 47 000 = 47,000 = 47k
105 = 10 00000 = 1,000,000 = 1M = one million ohms
There is one trick you have to remember. Resistances less than 100
ohms are written: 100, 220, 470. These are 10 and NO zero's = 10 ohms
= 10R
or 22 and no zero's = 22R or 47 and no zero's = 47R. Sometimes the
resistor is marked: 10, 22 and 47 to prevent a mistake.

Opps forgot looks like 180ohm's just use a regular resistor in its
place.





.

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