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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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TELEVISION ACCESSORIES xx TELEVISION Circuit for an improved audio amplifier and power supply which can be mounted inside a TV set. A quality TV sound extractor. Improve the FM audio portion of television broadcasts with this circuit which also avoids the "hot chassis" problems of other solutions. How to install an adapter between your television and your stereo. Oak holder for TV remote controls and TV listings. Stand holds multiple remote controls, a cordless phone and TV Guide. Circuit for a TV turnoff which will beep about a half-minute before the electrical circuit is turned off. Unit features a built-in delay of 30 to 60 minutes. The warning beep will allow you to reset the timer. Use a TV demodulator to monitor your amateur band receiver while watching television at another location. Build a high-fidelity add-on MTS stereo audio converter which will work with virtually any TV or VCR. Est. cost: $50. Add an SAP (second audio program) adapter to receive second language audio channels, weather, news, etc. Photoelectric switch turns sound on and off. TV signal booster is powered by sunlight, batteries or AC supply and will increase power from 10 to 63 fold depending on channel. TV "call box" allows TV sound to be interrupted and used as a loudspeaker for calling people watching TV. Remote control switch is activated by a high-pitched dog whistle. Can be used to turn off TV sound. TV commercial editor. Never watch or record broadcast-television commercials again. Eliminate them automatically with the micro-processor-based ComEd 1000. The machine "learns" the normal patterns for commercials and when to turn them off. Est. cost: $159. TV audio hearing wonder. A simple amplifier circuit helps the hard-of-hearing enjoy television. Automatic TV brightness control monitors the ambient room lighting and adjusts the cathode-ray tube brightness accordingly. Diagram shows how to modify a TV set so it will turn on instantly. Attach this fire alarm to the back of your TV set. If short circuit develops, it disconnects the TV from electric power line and sounds an alarm. Remote control will kill the TV sound with a blink of a flashlight. Cover for a portable TV looks like a giant toaster with two slices of bread popping up. TV wireless FM mike. Use a wireless microphone to broadcast your TV sound to your FM stereo system, earphones, etc. TV audio amplifier picks up the TV's audio output signal and amplifies it enough to drive a set of earphones for private listening. Uses an electret microphone element as the pick-up. How to build your own projection TV. A plywood cabinet fits around the front of a 17" portable TV. A special projection lens from Edmund Scientific and a focusing mount fit into the cabinet. Picture from the small TV is then projected onto a high-gain aluminized screen. Est. cost: $400. Circuit for a photocell switch that will shut off TV commercials using the beam of a flashlight. Automatic timer will turn off your TV from 30 to 60 minutes after it is turned on. A warning buzzer will sound just before it turns off the set, giving you time to reset the timer. Est. cost: $9. Wireless TV audio mute. This one-button project mutes the sound of any TV receiver that does not have wireless remote-control facilities. Est. cost: $35. Add stereo sound to your TV receiver. Device to convert mono TV receivers to make them "stereo-ready". Provides high-quality mono sound and prepares your set to accept any commercial stereo converter. Est. cost: $25. Audio/video distribution amplifier. This device eliminates signal-loss problems usually encountered when trying to interconnect a TV receiver, one or more VCRs, and similar products into a single video entertainment system. Booster will triple strength of FM and TV signals. Remote volume control for a TV set. Switch works up to 50 feet away. Requires a two-wire cable connecton on the TV set. Est. cost: $2. Light-activated remote sound shut-off for TV commercials. Uses an isolation relay. TV commercial killer. Flashlight beam shuts off unwanted TV sound using this circuit. Simple circuit cuts off TV sound when you shine a flashlight on a sensor. Simple touch-plate controlled time-delay relay turns TV commercials off for up to 30 seconds. Uses the 555 timer integrated circuit. Wireless switch uses a beam of infrared light to shut off television commercials (video and/or sound) for a preset period (30 or 60 seconds). Est. cost: $69. Circuit will turn off TV or radio audio for exactly 1-minute when activated by a push switch. Est. cost: $3. Enhance TV sound with stereo. Synthesizer produces impressive stereo sound from the mono output of any TV receiver or video cassette recorder. Est. cost: $90. TV commercial zapper is connected in series with the speaker wire. A light beam interrupts the signal to the speaker. TV viewer hears sound in private. Wireless pickup brings TV or phono sound to your ears through an individual receiver. Est. cost: $3 per receiver unit. How to get better sound from your TV set by hooking up a bigger extension speaker, wiring the set for headphones or piping the sound through a hi-fi amplifier. Silencer shuts off TV sound at the touch of a finger. Circuit uses a homemade "touch switch" instead of a button. Build a giant-screen projection TV. Uses an ordinary TV equipped with a wooden cone and projection lens. Requires a special screen on which to project the image. TV viewer only hears sound with receiver. Mirror unit for viewing television from bed. Wireless private listening for your TV. Attach this short range AM transmitter to a TV and pick up the sound with a nearby radio, such as a pocket-size transistor radio with an earphone. Touch switch allows you to vary the time the switch is on up to 15 seconds or more. Use it to kill TV commercials, doorbell switch, light timer and other jobs. Wiring arrangement allows you to play TV sound through your home hi-fi system at the flip of a switch. Build this digital on-screen TV clock. Digital clock displays either 4 or 6 digits of time on the screen of your TV set in either 12- or 24-hour format. Est. cost: $30. Build this video monitor. Permits direct connection of composite video signals from video games and microcomputers to the antenna terminals of your TV set. Est. cost: $14. Profile of an IC from National Semiconductor, the LM1889 TV video modulator circuit, which generates a VHF signal complete with color and audio. Tips on feeding TV audio into a hi-fi sound system. Video modulators. Part 1. Turn your TV into a video monitor. How they work and what is available. Video modulators. Part 2. Build this pay-TV decoder. Part 1. Est. cost: $69. Build this pay-TV decoder. Part 2. Lower or raise the volume on your TV set, or anything else, by means of remote control. Build this add-on to improve your pay-TV decoder by boosting the IF gain. Modify your TV to include a direct video input for your computer or VCR. This will eliminate the radiation and interference caused by the RF modulator. Est. cost: $65. Build this hi-fi sound converter for your TV. No internal modifications are required. All about cable-TV descrambling. Learn the theory behind cable-TV signal-scrambling techniques by investigating a descrambling circuit. Build this infrared transmitter and receiver to add remote control to just about anything. Application shown is for remote TV-channel selector. Stereo-TV decoder uses only one IC. Includes an introduction to the basics of MTS (multi-channel television sound) transmissions. Est. cost: $30. Build a World System Teletext decoder to pickup the free information services which are available as part of some TV signals. Est. cost: $200. Part 1. Build a World System Teletext decoder to pickup the free information services which are available as part of some TV signals. Part 2. Closed-caption decoder. Part 2. Construction. Stereo TV decoder. Build your own high-fidelity MTS decoder which will work with virtually any TV. Est. cost: $50. Part 1. The theory behind MTS transmission and decoding. Stereo TV decoder. Part 2. Building the decoder. Build this miniature wideband amplifier. Gives a 20-dB gain for TV signals and other signals from DC to 450 MHz. Est. cost: $12. Tips on adding an earphone jack to a television set. Audio limiter circuit will turn the television receiver volume down whenever the sound gets too loud (as during some commercials). Photocell switch turns TV commercials off and on in response to a signal from a flashlight. Est. cost: $12. Remote speaker and volume control for a TV set. Use of telephone jack plugs allows unit to be moved from place to place. Flash switch. Turn television sound off and on by shining a flashlight on this light sensitive switch. Remote switch to shut off TV commercials. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
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