Matched context for duty-controlled and switch

The page lists matched contexts for duty-controlled and switch.

Share - duty-controlled	Share - switch	Phrase
24.99%	6.52%	{duty-controlled or switch} valve [perform operation]
19.89%	1.00%	signal [does] {duty-controlled or switch}
12.29%	0.23%	manner [manner] {duty-controlled or switch}