[Robotgroup] resistor?

[Doug Evans]

Either would probably work, but hard to say for sure without a peek at the
schematic.

Assuming the resistor is used as a current-limiting resistor for the LED,
you pull slightly higher current with the 22 ohm, slightly less with the 27
ohm. 

24 is a non-standard value - as you've discovered. I'd lean toward the
22-ohm - closer to the specified value.

Another suggestion would be to use a pair of 47-ohm resistors in parallel -
this would give you 23.5 ohms, very close to the value specified.

What is your supply voltage?

-de


-----Original Message-----
From: robotgroup-bounces at puremagic.com
[mailto:robotgroup-bounces at puremagic.com] On Behalf Of Marvin Niebuhr
Sent: Friday, February 22, 2008 2:31 PM
To: The Robot Group Mailing List
Subject: [Robotgroup] resistor?

As some of you saw last night at the meeting, I'm having a resistor  
problem with the Frog Chorus. The LED kit I am using calls for a 24  
ohm resistor which was missing from the kit. All I could find at Frys  
is a 22ohm 1/2 w and a 27ohm 1/4w. Would any of those two work.? The  
kit includes 5 LEDs, 3 transistors, Cap. and a Electret Mic. and a  
trimmer resistor and is powered by 9v. Hey Vern, just thought of a  
spin off band called Transistor Sister. Think that's taken?     Marvin
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