Vigortronix 10va encapsulated pcb transformers vigortronix vtx 121 4810 218 pcb mounting encapsulated 230v transformer from vigortronix consisting of single primary 10va and secondary 2x0 18v 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 4810 218 encapsulated pcb transformer 230v 10va 0 18v