modified 5 years ago

Lab 3 part 3

02:54:25

a simple circuit displaying how a rheostat can work as a variable resistor to brighten or dim the lamp 

published 5 years ago

fatcat2

5 years ago

Note that it is very difficult to precisely align a 1k pot to a resistance below 100 ohms because of mechanical drifting. That's why people use phase control or PWM circuits. If you are not willing to use a dimmer circuit, you should use a log pot. Again, a precise control over the brightness is difficult to obtain.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.