HOW ARE TUBE AMPLIFIERS USED?
One of the first uses for a tube was to AMPLIFY tiny RADIO waves picked up on a wire ANTENNA, and make the tiny signal powerful enough to be heard on a large SPEAKER. The tiny electrical waves were put on the SCREEN in the center of the tube, and this turned on and off larger, stronger electricity that went to big speakers. The next biggest popular use for tubes was in TELEVISIONS, where the tiny TV signals were brought in from the TV antenna, and amplified, and then put on the TV — TUBE. Most people do not realize that the standard TV ” IS ” a TUBE! When you look at the front of a typical TV TUBE, you are looking at a sheet of steel, covering the entire front of the tube! I cut a piece of the steel out of a TV set that had the tube broken. You can see the size of the tiny section of screen by comparing it to the dime in the corner. From a distance, the sheet of steel looks solid. You can see the metal screen has tiny holes in it, as shown in the enlarged section. The back of the TV t
