Re: PDA back lighting potential

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RE: PDA back lighting potential

Ken, First, the disclaimer - I'm not an I-Safe expert but my company does make some I-Safe products so I have some knowledge that I've absorbed here. So take that into account when evaluating this advice... I believe the important factor is energy, not voltage, for explosive atmosphere use. Ty

Re: PDA back lighting potential

usually a boost regulator, depending on the stack of LEDs may go up to 12 to 18 volts freq keep moving up, was around 1MHz now they're going around 8 to 10MHz, but very localized near the IC see Micrel's app notes - Robert - On Mon, 18 Dec 2006 09:36:56 -0600 Ken Javor wrote: > Forum

Re: PDA back lighting potential

In message , dated Mon, 18 Dec 2006, Ken Javor writes >I am evaluating a PDA-like device for EMI/explosive atmosphere usage. >The device has what appears to be an LCD type display, which means it >has back-lighting. While the device runs off 4.2 Vdc batteries, which >are deemed a safe potentia

RE: PDA back lighting potential

Ken, I think that your expectations from an EMI point of view are quite realistic and present no greater hazard or problem in the light of the explosive atmosphere. However, from the explosive atmosphere perspective, I would be very surprised if you could get a device like this certified as intri