More about LED (792)

1-10-1983 | solid-state dark room lighting elektor october 1983 LEDs are normally only used in those applications for which they were designed: as indic...

1-07-1983 | 17 LED current source If an LED is used in a circuit, the current for that LED is normally set with a limiting resistor. The LED can then be...

1-07-1983 | LED "amplifier" The light emission of an LED is normally pretty low. If more brightness is required, the following circuit will help. The LE...

1-07-1983 | 29 economic LED The usual method of operating an LED from a voltage which is higher than its forward voltage is well known. A limiting resis...

1-06-1983 | switching channel for radio control elektor june 1983 switching channel for radio control The proportional radio control systems which are a...

1-04-1983 | 7-day timer/controller Elektor April 1983 The last time we published a single-chip programmable timer was way back in May 1979 and the circu...

1-07-1982 | Ordinary LEDs have a rather monot- onous diet: they will only "swallow" DC current with the right polarity, in which case a series resistor...

1-07-1982 | The novel use of components in this electronic temperature indicator make it very simple and economical to build. It uses only three ICs, an...

1-07-1982 | The IC used in this circuit is well known to readers of Elektor. The circuit itself would have been familiar if it had not been for the cont...

1-07-1982 | The term voltage controlled filter (VCF) frequently crops up in connection with synthesisers. As its name suggests, a VCF is a filter that i...