Pulse power source apparatus

A pulse power source apparatus that supplies a drive power to a pulse load circuit, the pulse load circuit periodically generating pulse current constituted of one or more consecutive pulses with the drive power, the apparatus comprising:

• a DC voltage generation unit generating DC output voltage supplied to the pulse load circuit;
• a pulse load drive signal generation unit generating a drive signal that drives the pulse load circuit to generate the pulse current;
• a DC voltage generation control unit that switches an output power of the DC voltage generation unit, which is set to a fixed value, between an ON state and an OFF state;
• and
• a frequency calculation unit that calculates a pulse frequency of the pulse current based on an output power command and notifies the DC voltage generation control unit and the pulse load drive signal generation unit of a calculated frequency as a command frequency or a command period which is the inverse of the command frequency, wherein
• the pulse load drive signal generation unit is configured to generate the drive signal based on the command period;
• and
• the DC voltage generation unit is configured to output, after the DC output voltage is lowered due to outputting of the pulse current, a fixed power larger than an output power corresponding to a maximum pulse frequency of the pulse current, and stop operation during a period after detection or estimation of the output voltage having reached a reference potential, until completion of the command period, the reference potential being a potential capable of generating a pulse.