RF transmit system with switchable power supply device

A radio frequency (RF) transmit system for a magnetic resonance examination system, the RF transmit system comprising:

• at least one RF channel, wherein the RF channel has an RF amplifier,
• the RF amplifier,
• at least two power supply devices, wherein each of the power supply devices is configured to supply a voltage to the RF amplifier, wherein the power supply devices are different than each other and configured to provide different voltages than each other,
• a direct current (DC) switch configured to switch the voltage supplied to the RF amplifier between the power supply devices to switch an operating point of the RF amplifier between high peak-power at high drain voltage and low peak-power at low drain voltage,
• conductor paths between the DC switch and each of the power supply devices,
• at least one capacitor bank connected to each of the conductor paths and to the DC switch, and
• a controller configured to receive sensor data representative of parameters from sensors associated with least one of the DC switch, capacitor banks, a magnetic resonance (MR) sequence controller, the power supply devices, or the RF amplifier, wherein the controller is further configured to switch the voltage based on the sensor data during an MR pulse sequence.