My amp, an Usher R1.5 consumes 55 watts when it is "off" as it retains a current even when the power switch is on the "off" position. This is to keep the amp in warmed up mode 24x7. To avoid using more electricity, what I want to do is to add an external power switch and leave the amp's power switch to ON all the time. Would there be any adverse effect when turning on the power using the external power switch while the amps switch is on the ON position?
Kill the power when you're not using it, or anything else for that matter.
Why waste electricity for nothing?
Unless, of course, you're rich and without a care.
Why waste electricity for nothing?
Unless, of course, you're rich and without a care.
Did you measure the power factor or just the current? This amp has a power transformer, if that's left connected in standby the current will be mainly magnetizing current, so the power factor may be very low (which makes sense as 55W on standby would be attrocious).
Still its still likely to have woeful standby power consumption (if not the gross 55W figure).
Always a great idea to switch off electrical appliances when not in use if possible - if for no other reason to save them from damage if a thunderstorm comes close and hits a nearby powerline.
I've got a older Boston Acoustics "Recepter" clock radio.
Nice little product from them, and very impressive, robust tone quality even today.
However, when "turned off" it still draws 50 watts, and about the same when "on".
Not a nice thing in my opinion, so I use it down at my workbench for tunes, only powered up at that time.
Nice little product from them, and very impressive, robust tone quality even today.
However, when "turned off" it still draws 50 watts, and about the same when "on".
Not a nice thing in my opinion, so I use it down at my workbench for tunes, only powered up at that time.
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My block lost 220V power and like an idiot I did not turn main power switch OFF
When it came back we had 380V for some 5 minutes,until they noticed the error.
Lost 3 TVs/Monitors, Breadmaker, Microwave oven, a dozen Fluo lamps, doorbell, etc. , a real massacre.
Saved Fridge/Freezer only because I automatically unplug it under the slightest electrical disturbance.
No, main ThemoMagnetic switch did NOT turn off, obviously current was not high enough, and it IS 220/380V rated.
Saved bench instruments *only* because I feed it through a smallish 1:1 isolation transformer which practically exploded.
Oh well.
For a benchtop clock radio? 😱
Or switch off at the wall socket.
Power surges are dangerous, and a AA cell in a wall clock lasts more than a year...cheaper, no danger, accurate, works without mains, keeps time even if there is a mains outage.
Power surges are dangerous, and a AA cell in a wall clock lasts more than a year...cheaper, no danger, accurate, works without mains, keeps time even if there is a mains outage.
Sorry about your losses JM, you live and learn all the time I guess.
As for that Boston clock radio, yes, it's got a large power transformer in it, and since it's all electronically controlled, plus the clock needs constant power, the mains transformer is always connected to the line.
However, I don't care about the clock, I kill all the bench power when I'm done working there.
What IS kind of neat, every time I power up the bench, the clock always comes on at 12:00 (I don't have backup batteries installed in it) and counts down the time its been powered back on...... so if I'm at the bench for 3 1/2 hours, the clock reads 3:30!
So I know how long I've been slaving and soldering etc.
As for that Boston clock radio, yes, it's got a large power transformer in it, and since it's all electronically controlled, plus the clock needs constant power, the mains transformer is always connected to the line.
However, I don't care about the clock, I kill all the bench power when I'm done working there.
What IS kind of neat, every time I power up the bench, the clock always comes on at 12:00 (I don't have backup batteries installed in it) and counts down the time its been powered back on...... so if I'm at the bench for 3 1/2 hours, the clock reads 3:30!
So I know how long I've been slaving and soldering etc.