VIENTIANE Rotary switches were used as channel selectors on television receivers until the early 1970s, as range selectors on electrical metering equipment, as band selectors on multi-band radios and other similar purposes. Slide switches are mechanical switches using a slider that moves (slides) from the open (off) position to the closed (on) position. A biased switch contains a mechanism that springs it into another position when released by an operator. The plasma is of low resistance and is able to sustain power flow, even with the separation distance between the switch contacts steadily increasing.|Is Slot A Scam?