More about Magnetic (153)

1-07-2003 | One of the author’s physics projects required an accurate 1-Hz (seconds) clock signal. Unfortunately, precision 10-MHz quartz crystals are e...

1-02-2003 | Digitising analogue sound media like vinyl records and magnetic tapes is a simple matter if you have a reasonably fast multimedia PC. After...

1-12-2002 | This proximity switch employs a reed switch as the sensor device and the good old CD4017 decade counter for pulse processing. When the circu...

1-11-2002 | Feared by many motorists (let those who have never driven too fast cast the first stone), the speed camera, usually containing a radar, is a...

1-12-2001 | There are very many switching regulator ICs for reducing a dc voltage. In the ‘step-down’ operating mode, an internal switch connects the in...

1-11-2001 | A survey of these essential electronic systems, how they work, and how they are used. Practical component values are given for each oscillat...

1-07-2001 | This secret lock, unlike a conventional code lock, gives away no hints to the unwanted visitor as to its existence: there are no buttons, sw...

1-07-2001 | The circuit shows one way of obtaining a voltage of 90 V from a 1.5 V battery supply. The LT1073 switching regulator from Linear Technology...

1-07-2001 | Nowadays, there is a whole series of switching regulator ICs that work according to the step-up principle and thus convert the input voltage...

1-07-2000 | There are various types of remote-control extenders. Many of them use an electrical or electromagnetic link to carry the signal from one roo...