The PSSC Power Supply was designed many years ago for specific experiments from the PSSC teaching method. It is powered from 12V.AC. (not mains). The outputs are from 4mm spin free IEC terminals: 2x 200V.DC, 2x 100V.DC. 2x 6.3V.AC @1A. These outputs permit experiments on Mass of Electron (AP2120-001), Thermionic tube Diode (EM4040-001) & Triode (EM4050-001) and others requiring high voltage at low current with power for tube heaters. The housing is all aluminium and is made this way for lowest cost and an LED indicates 'Power On'. A two core flex comes from the unit with banana plugs for connection to any 12V.AC. power source.