Hello!

I just would like to make sure why CL and RL are configured like that. Is there purpose to prevent op-amp oscillation like an RC series network?

Link to the op-amp datasheet: http://www.ti.com/lit/ds/symlink/tl074a.pdf

Thank you!

 

The components are not to stabilise the op amp. They are a simulated load. If you look at the graphs you will see that these are the values used for the tests. They also show the supply voltage and temperature at which the tests were done.

Les.

 

The components are not to stabilise the op amp. They are a simulated load. If you look at the graphs you will see that these are the values used for the tests. They also show the supply voltage and temperature at which the tests were done.

Les.

Oh! I see that now. Thank you for pointing that out.

 

Generally components hung onto the output of a circuit that have the letter L in a subscript are telling you it is part of the load on the circuit... usually a standard test value.

 

Similar to a flyback diode used across a DC relay coil, a similar circuit called a snubber is used for AC inductive loads to protect the chip from kickback current when the motor reverses, or is turned off. When the motor is turned off, (just like a relay coil) the magnetic field collapses and a reverse-polarity spike is generated. The snubber and flyback are there to arrest / shunt the spike. Google "snubber circuit"

 

Thank you Erniem! I understand that now. It was just my first time seeing CL so it got me a bit confused.
Thank you for your extra info Radiohead! I always appreciate that!. I like your profile picture by the way

 

Funny, when I see a part with a reference designation like CL or RL I automatically read them as "C-load" or "R-load" after years and years of this stuff.

 

Funny, when I see a part with a reference designation like CL or RL I automatically read them as "C-load" or "R-load" after years and years of this stuff.

haha yeah from now on my mind should do the same