A Simple Product Detector
The simplest form of product detector mixes (or hetrodynes) the RF or IF signal with a locally derived carrier (the Beat Frequency Oscillator, or BFO) to produce an audio frequency copy of the original audio signal and a mixer product at twice the original RF or IF frequency. This high-frequency component can then be filtered out, leaving the original audio frequency signal.
Read more about this topic: Product Detector
Famous quotes containing the words simple and/or product:
“Each man’s private conscience ought to be a nice little self-registering thermometer: he ought to carry his moral code incorruptibly and explicitly within himself, and not care what the world thinks. The mass of human beings, however, are not made that way; and many people have been saved from crime or sin by the simple dislike of doing things they would not like to confess ...”
—Katharine Fullerton Gerould (1879–1944)
“The history is always the same the product is always different and the history interests more than the product. More, that is, more. Yes. But if the product was not different the history which is the same would not be more interesting.”
—Gertrude Stein (1874–1946)