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Three-deck rotary switch allows controlling three different circuit functions. A rotary switch is a switch operated by rotation. These are often chosen when more than 2 positions are needed, such as a three-speed fan or a CB radio with multiple frequencies of reception or "channels".
GTD-5 EAX (Class 5 switch, many in use today, was the primary switch in former GTE exchanges. Now supported by Lucent.) GTD-120 Digital PABX; GTD-1000 Digital PABX; GTD-4600 Digital PABX; OMNI-S1 Digital PABX; OMNI-S2 Digital PABX; OMNI-S3 Digital PABX; Strowger Automatic Toll Ticketing (SATT); relay and type 45 rotary switch mechanics
There are many different kinds of DIP switches. Some of the most common are the slide, rocker, piano (side), and rotary types. Slide / rocker / piano DIP switches are commonly available in 1 to 12 contacts (positions) SPST, [4] [5] though some are available as special order up to 30 contacts (positions).
A rotary switch operates with a twisting motion of the operating handle with at least two positions. One or more positions of the switch may be momentary (biased with a spring), requiring the operator to hold the switch in the position. Other positions may have a detent to hold the position when released.
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The commercial version of the Strowger switch, as developed by the Strowger Automatic Telephone Exchange Company, used a rotary dial for signalling to the exchange. The original final selector (connector) switch which connected to 100 customers was supplemented by preceding group selector stages, as the "cascading" enabled connection to many ...
A rotary actuator is an actuator that produces a rotary motion or torque. The simplest actuator is purely mechanical, where linear motion in one direction gives rise to rotation. The most common actuators are electrically powered; others may be powered pneumatically or hydraulically , or use energy stored in springs .
Rotary switches typically employ detents to keep the control shaft properly aligned with the appropriate contact. Any spring-powered wind-up toy employs one, in order to disallow unwinding of the spring. The ratchet wrench, which is employed to intentionally use force against the detent and comes in an increasing variety of types.