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Results tagged with power
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user 33899
Electric power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt (one joule per second). Use this tag where power is a primary concern for the design under discussion. Use the "low-power" tag when that applies.
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Cable rating - What is the max amp for a 1.5-1.75mm cable?
The power grid's voltage is 230V (Europe).
I have already installed a thick cable and I want to use it (it would be difficult to change it). …
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Boost starup of a motor with a capacitor
I have a RC car and I wonder if its startup speed will increase if I mount a capacitor in parallel with the battery. My thinking is that while the car is idling the capacitor will load. When I start t …
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Can I connect high power LEDs in parallel without resistor?
I see lots of people connecting high power LEDs in parallel to a single power supply (constant current).
Some of them have powerful knowledge about electronics (example). … So, is it something special about high power LEDs so they can be connected in parallel without resistor? …
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Can I increase the no of operating hours of a battery without increasing its capacity?
Setup
Let's say I have a 12V / 1Ah rechargeable battery pack. A device that consumes 0.1A will run for 10 hours.
When the battery drops to 8V, the voltage will be insufficient and the device won't wor …
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How to power a 150W motor with rechargable bateries?
To power it I would like to build a battery pack using 2Ah rechargeable batteries. …
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Maximum current through an LED
However I know that the voltage is 3.2V-3.6V and the power is 1W.
Is it correct to assume that the maximum current is therefore 0.27A ?
i=p/u=1W/3.6V …
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How much will the output voltage of a transformer drop as I add loads?
Will the voltage drop after I add each LED (this is what I think it will happen) or only after I reach the maximum power consumption? …
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How to power up 50 LEDs? (DIY 'fireflies' project)
I DON'T want high voltage cables in my garden so I am thinking in getting a high power, low voltage transformer to power up these LEDs. … For example, I have two 24V/1.25A (30W) power supplies from Canon printers. Let's say this is a small scale test. Later I could use a PC power supply for 50+ LEDs. …
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Reduce power consumption for AN7316 amplifier
Or can I shutdown the "rec" amplifier at all, in order to reduce power consumption? …
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Efficiency of classic voltage regulator vs. "switching" regulator [closed]
The input is 24V AC and the output will be around 12V DC and I will be used to power a 20W audio amplifier. …
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