step-by-step switch


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step-by-step switch

[¦step bī ¦step ′swich]
(electricity)
A bank-and-wiper switch in which the wipers are moved by electromagnet ratchet mechanisms individual to each switch.
References in periodicals archive ?
The "crossbar" switch was introduced in the mid 1930s, and it brought several improvements to the step-by-step switch, notably, fewer moving parts, thus creating more efficiency and reliability.