Buy from eBay - $70

Regulated, variable power supplies are available from eBay,, Aliexpress and other vendors. Here is one, pictured on the left.

Voltage is adjusted by turning a screw and normally left at the desired setting. You’ll need a voltage display or a multimeter to measure voltage.

It is recommended the power supply has a watt rating at least 20% higher than required for your tube. 

There are also professional power supplies for sale on eBay. These can be expensive but will probably last a lifetime. 

© Henrik Lorange 2015
Disclaimer: I do not receive any commission, kickbacks or any favors from vendors or sellers of these parts or systems. All information is provided as-is. build this at your own risk. rife tech might not work for your condition. do your own research first. No medical claims are made for this system whatsoever.