For example, a radio controlled overhead crane may have a large multi-circuit rotary switch to transfer hard-wired control signals from the local manual controls in the cab to the outputs of the remote control receiver.
42.
Basically a rotary switch construction set, the Geniac contained six perforated masonite disks, into the back of which brass electrical connections between slotted brass bolt heads sitting out from the similarly perforated masonite back panel.
43.
Rotary switches are also used in some radio transmitters ( particularly VHF and FM broadcast ) to select the DC bias used to set the voltage-controlled oscillator, which determines the center frequency of the carrier wave output.
44.
In one design, the motor is often a small shaded-pole synchronous motor combined with a rotary switch that can disconnect the motor at either of the two stopping points ( " damper open " or " damper closed " ).
45.
On permanent layouts, multiple power supplies are traditionally used, with the trackage divided into electrically isolated sections called blocks; toggle or rotary switches ( sometimes relays ) are used to select which power supply controls the train in a particular block.
46.
For electrical zone valves, the motor is often a small shaded-pole synchronous motor combined with a rotary switch that can disconnect the motor at either of the two stopping points ( " valve open " or " valve closed " ).
47.
As with the Class 150, all the doors are operable by passengers when released by the guard using one of two passenger door control panels; they are energised using a carriage key to turn a rotary switch situated on the cab bulkhead.
48.
This 4 way rotary switch made it possible to use the pick-ups in 4 different ways : 1 ) neck + middle, 2 ), middle pick-up + bridge pick-up, 3 ) all three together, and 4 ) the neck and bridge out of phase.
49.
In the down position the 2 way toggle switch bypassed the entire 4 position rotary switch circuit and made one straight connection to the bridge pick-up, which resulted in a sound that was pretty close to that of the Fender Esquire ( Telecaster in bridge only position ).
50.
Electric stove " burners " may be controlled by a rotary switch with a finite number of positions ( for example, six ), each of which engages a different combination of resistances and hence a different heating power, or may have an " infinite switch " called a simmerstat.
