The convention of naming resistors R subscript L

Morning all,

I’ve noticed that a number of sensor schematics adopt the convention of naming a resistor RL. See the attachments where I think the resistors are pull-downs, the bottom resistor in a divider.

Why the “L” subscript?- what’s it stand for? Load?

RL1.PNG

RL2.PNG

Yep.

RL

Hi, RL means that it is the Load that the device is outputting current to.
It could be a relay coil, lamp, LED, meter, in these cases it is a resistor to develop an output voltage across.

Tom… :slight_smile:

JimboZA:
Morning all,

I’ve noticed that a number of sensor schematics adopt the convention of naming a resistor RL. See the attachments where I think the resistors are pull-downs, the bottom resistor in a divider.

Why the “L” subscript?- what’s it stand for? Load?

Yes, it means R (load).

You may also see RF which usually means “feedback”.