Vigortronix 23va encapsulated pcb transformers vigortronix vtx 121 3023 218 pcb mounting encapsulated 230v transformer from vigortronix consisting of single primary 23va 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 3023 218 encapsulated pcb transformer 230v 23va 0 18v