Vigortronix 15va encapsulated pcb transformers vigortronix vtx 121 3015 412 pcb mounting encapsulated transformer from vigortronix consisting of dual primary 2x115v 15va and secondary 2x0 12v windings due to their construction and encapsulation these transformers provide excellent performance in aggressive environments where potential exists for changes in temperature and humidity vigortronix vtx 121 3015 412 encapsulated pcb transformer 115v115v 15va 0 12v