More about LED (792)

1-06-1976 | LEDs are now finding applications in more and more varied fields and here is a unit to introduce them to the world of discos and the tr...

1-04-1976 | Analogue indicators that make use of columns of LED`s to measure voltage or other parameters provide a robust alternative to the conventiona...

1-01-1976 | With home-made FM-tuners, the design and construction of the tuning scale often causes much brain racking. A mechanical soluti...

1-01-1976 | The Texas IC type SN 16880 N contains all the functions necessary for a stereo LED level meter, which can replace the conventional moving...

1-07-1975 | This simple circuit will find many applications as a battery eliminator for low power Iequirements. It consists of a transformer, a brid...

1-07-1975 | A further application of the LM 3909 circuit is a 1 kHz square-wave oscil- lator. Pl is used for making the square-wave symmetrical. P2...

1-07-1975 | A further application of the LM 3909 circuit is a 1 kHz square-wave oscil- lator. Pl is used for making the square-wave symmetrical. P2...

1-07-1975 | Programmable frequency dividers are particularly useful for producing a large number of frequencies from one reference frequency. An exa...

1-07-1975 | The circuit consists of an `electronic` attenuator, arranged to respond to a fingertip touching one of its contact plates. Transistor Tl...

1-04-1975 | In response to numerous requests from readers we publish this LED-display chart to enable constructors to find their way through the ju...