1, : * ** Ir 5aquot; -, 2. A. ELECTRICAL switches are devices we use to open and close electrical circuits. We use a single pole switch in a circuit between the power source and the electrical ... If we want to switch the lights in a room from more than one point, we use a 3-way or 4-way switch. ... A STEADY HAND TESTER CIRCUIT Figure 7 shows a lficture and a circuit wiring diagram of a aSteady and Testeraquot;.
|Title||:||4-H Club Farm Electrification|
|Author||:||John Wilson Martin, William H. Knight|