Full Details from Amazon.com : http://www.amazon.com/gp/product/B005LY4RHC?tag=onigi-20<br /><br />3B Scientific U33010-115 AC/DC Power Supply 5 kV (115V 50/60Hz)<br /><br />Universally applicable floating high-voltage source <br />For operation of electron tubes <br />With built in high voltage resistant transformer to supply the heater voltage for electron tubes <br />Continuously adjustable high voltage safe to touch with passive current limitation and digital voltage display <br />High voltage power supply 5 kV
