Opam question

[Nick]

Hi guys,
Why is RL resistor at the output of an OPAM in an electronics design??

Thanks and regards,

Nick

 

[kell]

Hi guys,
Why is RL resistor at the output of an OPAM in an electronics design??

Thanks and regards,

Nick

So it doesn't short out? Op amps have low output impedance.

 

[Eeyore]

RL is short for *load resistor*. Loads ( if required ) do indeed normally
connect at the output !

They are rarely necessary though. You should post a schematic.

So it doesn't short out? Op amps have low output impedance.

A clueless answer from a Google groups user to a clueless question from another
Google groups user !

No surprise there I guess ?

Graham

 

[Andrew Holme]

Hi guys,
Why is RL resistor at the output of an OPAM in an electronics design??

Thanks and regards,

Nick

In series with the output or to ground?

A series resistor might be inserted to reduce output current.

A 1K resistor to ground on the output of an LM324 op-amp reduces crossover
distortion, by biasing the output stage into class A.

 

[Nick]

Hi,

With respect to the ground, yes RL stands for Load resistor. How can a
load resistor help in not shorting the OPAM, here a series resistor can
do!!

In the fashion below:
-----|\
| /---
-----|/ _|_
|RL|
------
|
-----
GND

Thanks and regards,

Nick

 

[Peter Bennett]

Hi,

With respect to the ground, yes RL stands for Load resistor. How can a
load resistor help in not shorting the OPAM, here a series resistor can
do!!

In the fashion below:
-----|\
| /---
-----|/ _|_
|RL|

Very often, sample circuits will show an "Rl" like that, just to show
how the load should be connected. In Real Life, you would rarely put
a resistor there - you connect your load, whatever it may be, in place
of Rl.