The power supply unit is equipped with two powerful PM (Philbert-Mantelschnitt) transformers with a smaller PM transformer for Standby operation. The two power transformers are switched ON softly with 5 high power relays in the energy saving mode. If required, they can be switched via a current limiter into normal operation mode. In the power supply unit, 8 different voltages are generated. Every voltage is rectified individually and pre-buffered. These voltages are used to supply the input amplifier, driver, output stage as well as the control circuit separately. The Emitter I is connected to the power supply unit with a 2 meter long double shielded cable.