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...ts cars. Some blowoff valves are sold with [[trumpet]] shaped exits that [[Amplifier|amplify]] the "Psshhhh" sound, these designs are normally marketed towards

...wider [[RPM]] range, with low emissions. By analogy with an [[operational amplifier]], the EMS acts as a feedback loop around an engine with a great deal of op

...brakes are released. The system is a form of [[Servomechanism|servo]] or [[amplifier]].

* [[rack and pinion steering]] with [[mechanical amplifier|servo assistance]];