Consider a Common Emitter amplier circuit, there'll be two inputs present in which one is applied at the base of the transistor and other at collector I want to know 1)what is difference between that two voltages ? 2)need to use both in the same circuit? ...

Hi, I have a hydronic heating system that uses two 120 Volt thermostats in 2 zones. The thermostats turn the circulator motors on and off. I replaced the old manual Honeywell thermostats 10 years ago, at the recommendation of the local plumbing supply, with programmable set back thermostats...

I removed a fluorescent light and replaced it with a ceiling fan/light combo a little over a month ago. It was working fine until two days ago. I turned the switch, the lights flickered and then the whole thing went dead. When I use a circuit tester the test light is lit, but it looks dim...

I installed the track as instructed. I attached a couple of the fixtures, but they would not light. I do have electricity around the track, checking with a voltage detector, but the lights do not light. What could the problem be? Thank you.