But there can be spdt with 2 positions (ON-ON) and with 3 positions (ON-OFF-ON)
how is this distinguished?
Within the standard nomenclature like "SPST" and "DPDT", they can't be distinguished. Generally, in catalogs, parts lists and such, the "on-off-on" type would be referred to as something like "SPDT with center off", for example.
-Dave
-- Dave McGuire "I've watched Harley people throw up Cape Coral, FL on the ceiling." -Krissi
