Quote:
Originally Posted by Tristan Lall
The bell is: - electrical,
- an actuator,
- not a solenoid, and
- doing work.
There was no prohibition against electric actuators in 2010, except that motors other than those listed were illegal, and solenoid actuators were illegal. Think of it as a custom circuit. (It must still comply with all other rules.)
(The 2012 rules are somewhat different, as noted above.)
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A solenoid is simply a coil of conductive material (Technically, there are many accidental solenoids on robots every year, but those are not actuators). The bell pictured clearly utilizes a pair of solenoids wrapped around the iron core. As stated it is an actuator. The actuation occurs as a result of current passing through said solenoids, thus, it is a solenoid actuator.