"That begins to look like business," exulted Joe. "We'll be putting
Mr. Edison out of business pretty soon."
"Yes, it's lucky he can't see that tuning coil," laughed Bob, "he'd
be looking up the want ads in the papers, sure."
"Oh, that coil won't be a patch on the condenser we're going to make,"
declared Herb.
"I know we've got to have a condenser, but I'm blessed if I really
understand what it is for," said Joe. "I know the doctor told us
about it, but I guess I didn't get a very clear idea of what it was
all about."
"I'm not very clear on it either," admitted Bob. "But from what he
said and what I've read, it seems to be a sort of equalizer, for the
electric current, storing it up when it's strong and giving it out
when it's weak. It prevents the current getting too strong at times
and burning something out."
"That's the way I understood it, too," said Herb. "And Dr. Dale
said that in the larger sets they have what they call a variable
condenser, so that they can get more or less damping action according
to the strength of the incoming current waves."
"I guess I get the idea," said Joe. "But it's a pretty complicated
thing when you first tackle it, isn't it?"
"Yes, but it's just like almost anything else, probably--it's easy
when you know how," said Bob.
"It tells here how to make the condenser," said Herb, who had been
looking over an instruction book that the boys had bought.
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