# What is this?

Discussion in 'General Electronics Chat' started by nado, Dec 26, 2012.

1. ### nado Thread Starter Member

Dec 17, 2012
40
1
http://www.allaboutcircuits.com/vol_3/chpt_1/7.html

"||" in Attenuators equation: ZIN = R1 + (R2 ||(R1 + Z))
ZIN = 25.97 + (35.14 ||(25.97 + 50)) ​
ZIN = 25.97 + (35.14 || 75.97 ) ​
ZIN = 25.97 + 24.03 = 50

35.14 || 75.97 = 24.03 ???

I got it!

P.S. :It's not a math symbol! Parallel resistors!

Last edited by a moderator: Dec 26, 2012
2. ### MrChips Moderator

Oct 2, 2009
12,252
3,283
This is a common way of expressing the value of two resistors in parallel.
Use the formula for calculating the resistance of two resistors connected in parallel to arrive at the equivalent resistance.

3. ### nado Thread Starter Member

Dec 17, 2012
40
1
I thought it was a math symbol. Right after I posted, I remembered the parallel resistors. I need to delete this thread.

Thanks anyway.

4. ### MrChips Moderator

Oct 2, 2009
12,252
3,283
You should leave the original post. Others may find it useful.

Last edited by a moderator: Dec 26, 2012
DrRoss likes this.
5. ### bertus Administrator

Apr 5, 2008
15,539
2,307
Hello,

The original post contained this:

Bertus