The speed-interval control of high-speed trains adopts the one-step braking curve mode, and multi-step braking curve is as a standby mode.
It takes at least 20 milliwatts to keep a mobile phone operating in standby mode, But Nokia hopes that power scavenging might eventually deliver 50 milliwatts, enough to trickle-charge a phone.
In standby mode, the battery lasts about 10 days.
And, even though it's more reliable than standby mode, I'd still advise saving all your work each time before using hibernation.
The temperatures of the fixing and pressing rollers are kept in a predetermined temperature range in a standby mode.
User checks the screen of the phone and if he wants to miss a call he should simply give a phone a tap, causing the phone to fall back down again and return back to standby mode.
But now Nokia reckons a mobile phone that is always left in standby mode could be just what the environment needs.
To run a state-of-the-art cell phone, a fuel cell would need to generate about a quarter of a watt while the phone is h-i standby mode, and a full watt when making calls.
