I agree with the comment here - I'd just like to add, that devices could cut stand-by power to a total minimum if the standby circuitry was powered by a small battery, inside the device, that was kept charged by the unit when powered on. That would mean that the transformer could be powered off whilst in standby mode.
Of course, there are a few details to work out, like, allowing a cold start if the battery happens to be dead etc. but these are easily doable.
What would a rechargeable 9v battery use to power a tiny circuit and a led ? I'm sure we're talking microwatts!
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A battery
I agree with the comment here - I'd just like to add, that devices could cut stand-by power to a total minimum if the standby circuitry was powered by a small battery, inside the device, that was kept charged by the unit when powered on. That would mean that the transformer could be powered off whilst in standby mode.
Of course, there are a few details to work out, like, allowing a cold start if the battery happens to be dead etc. but these are easily doable.
What would a rechargeable 9v battery use to power a tiny circuit and a led ? I'm sure we're talking microwatts!