series-parallel switch

series-parallel switch

[′sir·ēz ¦par·ə‚lel ¦swich]
(electricity)
A switch used to change the connections of lamps or other devices from series to parallel, or vice versa.
References in periodicals archive ?
Among them: brushless alternators, engine-mounted to reduce vibration; sealed maintenance-free 12 V batteries (into the '60s, big rigs were still using four 6 V batteries and a troublesome series-parallel switch which hooked the batteries in series) for the starter circuit; a recommended practice for mounting battery boxes between the frame rails so as to eliminate most battery-destroying vibration; a standardized truck instrument panel layout with the large speedometer and tachometer directly in front of the driver and other gauges grouped by function on either side (this is still the industry standard today).