It's been a while since I was here. I posted a question several months ago and got great answers. Here are a few more that should be pretty easy for a lot of you guys. (Please remember that I am a total noob. )
1) What does one call a potentiometer/variable resistor that is also an on-off switch? They look like this:
and you can press the "handle" down to toggle the circuit open and closed. It's like two separate switches in one, in other words. On-off and variable resistance.
I ask because I need a few for a project. I want to buy them online and searching for an electronic component without knowing what it's called is no fun any time. lol.
2) I need these for a DC application. I need to be able to modify 5 to 15 volts DC to within 0.1 volts over a range of say 2 volts. (From 4.0 to 6.0 via 0.1 v steps, for instance. And from say 11.0 to 13.0 with the same degree of accuracy.) What "law" do I use to know what specs to shoot for?
Any help will be greatly appreciated.
1) What does one call a potentiometer/variable resistor that is also an on-off switch? They look like this:
and you can press the "handle" down to toggle the circuit open and closed. It's like two separate switches in one, in other words. On-off and variable resistance.
I ask because I need a few for a project. I want to buy them online and searching for an electronic component without knowing what it's called is no fun any time. lol.
2) I need these for a DC application. I need to be able to modify 5 to 15 volts DC to within 0.1 volts over a range of say 2 volts. (From 4.0 to 6.0 via 0.1 v steps, for instance. And from say 11.0 to 13.0 with the same degree of accuracy.) What "law" do I use to know what specs to shoot for?
Any help will be greatly appreciated.