The transmitter is intended primarily for use with the receiver in the preceding articles. It works form two small 1.5 V dry batteries or one 3 V lithium battery. To make the unit compact an... Read more
Infra-red transmitter: It often happens that someone wants to watch television without the sound disturbing other people in the room. To avoid having a long cable trailing over the floor, th... Read more
After the demise of BSB( British Satellite Broadcasting) in early 1991, the electronic surplus market was flooded with the tens of thousands of brand new but otherwise unusable satellite TV... Read more
Modern TV tuners normally contain means to scale down the VCO (voltage-controlled oscillator) signal. The one used in the proposed synthesizer is a Philips Type UV816/6456, whose scale facto... Read more
Infra-red headphone receiver: This receiver is meant to complement the transmitter describe in the previous article. Its design is based on just one FET. This has the advantage that construc... Read more
Purpose of Infrared signal repeater: The infrared signal repeater is intended to extend the operating range of a standard Infra-red (IR) remote control system used with an audio or video sys... Read more
Purpose and design of Infrared headphone receiver: This receiver is meant to complement the IR headphone transmitter. Its design is based on just one FET. This has the advantage that constru... Read more
Purpose of Infra-red headphone transmitter: The proposed transmitter provides an optical (infra-red) that is wireless, connection to a headphone. Three infra-red (IR) LEDs are provided with... Read more
