All items tagged with light and oscillator (11)

3-01-2014 | On discovering that my previous design based on a blocking oscillator and diac strobe pulser was a bit heavy on the battery, it seemed about...

1-07-2011 | The circuit shown here is formed of nine inverting transistor amplifier stages connected in series with an LED connected between emitter and...

1-01-2005 | Here’s a recipe to make LEDs produce slow, continuous light effects rather than abrupt changes normally obtained from square-wave drive sign...

1-12-2004 | In the July/August 2004 issue we published a flickering light for use in models that uses a microcontroller to minimise the component count....

1-07-2001 | This simple and cheap circuit is not just for Christmas! There are just two resistors, a small-signal transistor such as a BC547, one ‘flash...

1-07-1997 | The Type HA7210 IC from Harris Semiconductor is an integrated low power crystal oscillator that can be programmed extremely to generate...

1-07-1986 | EE July/August 1986 34 We all sometimes wish that some of the switches around the home were just a little easier to locate and operate, nota...

1-07-1985 | 1110011111041111 A novel use of solar cells makes pos- itioning your car in the garage rather easier than old tyres, a mirror, or a chalk ma...

1-07-1983 | switches itself on (and off) This circuit forms a switch that can be triggered on (or off) at the onset of darkness and remain active for a...

1-07-1982 | Elektor has lost track of the number of running light circuits that have seen the light on its pages in recent years. There must have been a...