It does depend on your ability to build or play with basic electronics. With a CLD diode even a novice can build a basic generator. I have gone overboard myself with a lab magnetic stirrer that I tied in a thermocouple with a digital readout for temp control and a digital current/voltage meters and a variable current supply from 100µA to 15mA.Using a beaker with a tight lid with the silver going through along with the thermocouple.(I will be using this setup for Colloidal Gold CG). My wife has RA and the CG works great! I also use for my spinal damage(C1 through C7).