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Is this possible, for example have one antenna at the front of a car and one at the rear. I know this sounds sort of daft because where would GPS chip work out its position. I've heard that some of the high end luxury cars do it this way for increasing reliability of the in car satnav, but do...

Has anyone had experience of designing high efficiency low power supply circuitry? I want a circuit that supplies 3.8v Dc. For 95% of the time it should supply 1 or 2 mA but the rest of the time it must supply nearer 200ma with occaisional peaks at 1A or so,(duration only mS or so). This circuit...

Has anyone had experience of designing high efficiency low power supply circuitry? I want a circuit that supplies 1ma at 3.8v Dc for 95% of the time powered from batteries that could deliver up to 12vDc and 5V DC depending on customer requirements. Occaisionaly when the application wakes up it...

Has anyone had experience of designing high efficiency low power supply circuitry? I want a circuit that supplies 1ma at 3.8v Dc for 95% of the time powered from batteries that could deliver up to 12vDc and 5V DC depending on customer requirements. Occaisionaly when the application wakes up it...

for miniature GPS/GSM tracking device device with internet based mapping. http://www.findware.co.uk/

Ive heard that in Europe folks use their hazard/warning lights when approaching something dangerous to indicate that its not just normal braking. Something attention grabbing to tell you to brake quick rather than wait for your brain to process the visual data and realise that you are infact...

Does anyone know the legalities of either having and intense red brake light come on under extreme braking eg when the ABS activates or alternatively have a rapidly flashing red light to indicate the same severe braking. I would be interested in European laws as well as US. thanks.

How often is temperature monitoring used for calculating when concrete has cured. What are the typical type projects that this would be used for and are there any advantages in longterm temperature monitoring of concrete after the initial build? thanks.

The project I am looking into is to detect small inexpensive tags when placed inside a panelled delivery van when it passes a fixed reader, assuming worst case that the van is mostly metal sides, bottom, roof and doors with no windows what would be the best frequency to use if it was possible to...

I will be using the type with internal batteries. thanks, L.

I was testing a RFID tag in the office recently and wanted to loose the signal, I thought that by placing the little tag in a microwave oven 10 metres away I would loose the signal from the RFID reader. It suprised me that it still worked perfectly, why is this? I assume that a microwave oven is...