Power Supply Specification

The power supply must:

1. Accept mains electricity

   1. Interface to BS1363 socket

   2. Accept  240VAC

   3. Draw less than 1A

2. Supply power to electrodes

   1. Vary voltage in range 0-20V to  5mV

   2. Vary current in range 0-1A to  5mA

   3. Vary waveform

   4. Reverse current (see **PRC**)

3. Measure power to electrodes

   1. Measure voltage in range 0-20V to  5mV

   2. Measure current in range 0-1A to  5mA

4. Control power to electrodes

   1. Adjust voltage output to match voltage set point

   2. Adjust voltage output to match current set point

   3. Accept voltage/current set points

5. Be safe to use

   1. Have no exposed mains connections

   2. Have a mains fuse for protection

   3. Have no exposed DC connections (except to electrodes)

   4. Have override power off switch

6. Supply auxiliary power to other subsystems

   1. Power micro-controller (3.3V)

   2. Power actuators 5V/12V