Dash 8-100
Flight Crew Commercial
Aircraft Equipment Problem Critical
Flight Crew Landed As Precaution; Flight Crew Returned To Departure Airport
Aircraft
On the climb out; received a Master Caution light and associated caution lights; R AC Bus; R TRU; R Stall Warn.  We had just entered the bottom of the cloud layer so asked ATC to descend to get out of the icing conditions.  We were approved to descend and ran the R AC Bus Checklist.  On completion; asked ATC to return.  Vectors were given for our return and flight returned uneventfully.
DHC8-100 crew received a Master Caution light and associated caution lights for; R AC Bus; R TRU; R Stall Warning.  The right AC Bus emergency checklist was complied with and the flight returned to the departure airport.