This listing is for a new heinzinger PNChp 1500-40 neg ultra high stability power supply. This 1.5kv, 40ma supply is rock solid and good to 10 ppm stability. Includes both analog remote control and ethernet. It was intended for use in a particle accelerator project that was canceled before being finished. Please note this model supply can be converted to positive by reversing the polarity of the diodes in the HV stage. This is a quick 5 minute job (I can provide specific details if need be). At the time of writing I have roughly 2 dozen of these supplies, so I will be using a stock photo for the different models as they are all identical. Comes with a HV cable and power cable.