"Five hundred horsepower."

Olcott's face simply couldn't hold its expressionless expression against something like that. His lips twitched, and his eyes blinked. "Five hundred what?"

"I will not make the obvious pun," said Bending. "I said 'five hundred horsepower'—unquote. About three hundred and seventy-five kilowatts, maximum."

Olcott appeared to be unable to say anything. He simply stared at the small, innocuous-looking Converter. Bending was unable to decide whether Olcott was overawed by the truth or simply stricken dumb by what must sound like a monstrous lie.

Olcott licked his lips with the tip of his small, pink tongue. "Five hundred horsepower. Hm-m-m." He took a deep breath. "No wonder those copper studs are so thick."

"Yeah," said Bending. "If I short 'em across at low voltage, they get hot."

"Short them across?" Olcott's voice sounded harsh.

Bending was in his seventh heaven, and he showed it. His grin was running as high an energy output as that he claimed for the Converter. "Sure. The amperage is self-limiting. You can only draw about four hundred amps off the thing, no matter how low you put the voltage. When I said five hundred HP, I meant at a thousand volts. As a matter of fact, the available power in horsepower is roughly half the voltage. But that only applies to this small model. A bigger one could supply more, of course."

"What does it weigh?" asked Olcott, in a hushed voice.

"Little over a hundred pounds," Bending said.

Olcott tore his eyes away from the fantastic little box and looked into Sam Bending's eyes. "May I ask where you're getting power like that?"

"Sure. Hydrogen fusion, same as the stellarator."

"It's powered by deuterium?"

Bending delivered his bombshell. "Nope. Water. Plain, ordinary aitch-two-oh. See those little vents at the side? They exhaust oxygen and helium. It burns about four hundred milligrams of water per hour at maximum capacity."

Olcott had either regained control of himself or had passed the saturation point; Sam couldn't tell which. Olcott said: "Where do you put the water?"

"Why put water in it?" Sam asked coolly. "That small 

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