On Thursday, 2 November 2017 18:10:15 UTC, rickman wrote:
tabbypurr wrote on 11/2/2017 12:43 PM:
On Thursday, 2 November 2017 15:37:32 UTC, micky wrote:
In sci.electronics.repair, on Wed, 1 Nov 2017 16:39:09 -0700 (PDT),
tabbypurr wrote:
On Wednesday, 1 November 2017 20:18:23 UTC, rickman wrote:
tabbypurr wrote on 11/1/2017 3:32 PM:
On Wednesday, 1 November 2017 19:25:17 UTC, wrote:
On Wednesday, November 1, 2017 at 1:58:11 PM UTC-5, Seymore4Head wrote:

Does a clock radio use more power in the aux mode than off mode?

I listen to my phone over the stereo speakers from my clock. If I
just unplug the phone and leave the radio in aux mode will it use more
power?

Possibly, it depends on how power-conscious the designer was. The amplifier may power down with no input signal. One clue may be to put your ear to the speakers, with no input signal, and listen for amplifier white noise. Turn the volume way up.

It may not apply to your radio, but there are very strict efficiency requirements on most modern appliances. Even wall-warts (a major source of wasted energy) are now required to limit quiescent current (no load) to mere microamps.

Most?, Washing machines & dishwashers yes, what else?
Wallwarts & TVs have quiescent power limits, but I don't remember any efficiency requirement.

Wallwarts are pointless to regulate. I often see blurbs from power
companies and other sources talking about the wasted power in power
"vampires". If you can't feel them being hot, they aren't wasting enough
power to even think about. The extra heat your brain generates while
thinking about such things amounts to more power than the wall warts waste.

In comparison, a 7 watt night lite which before LEDs were often left on all
the time, would burn your fingers if you touched it. 7 watts left on 24/7
would cost $0.50 to $0.75 a month. So if your wall wart is barely warm to
the touch it likely is well under a dime a month.

Oh quite. I once worked out that going round switching them off every day

And the goal of redesigning t he devices is so that "going round
switching them off" will not be necessary.

It isn't necessary with iron lump warts either, so that can't be the goal

would save 12p per hour of labour. It's politics innit.

No, it's not politics. It's a different outlook on what's important.

Whe someone insists everyone else works for 12p an hour in the first world, that is certainly politics.

What??? How does requiring low power in appliances mandate that you run
around your house unplugging things?

Are you really as confused as you make out to be?