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Using a 10 volt power supply for a 9 volt keyboard is not a good idea. The higher voltage will cause damage to the keyboard, burning it out and making it useless.
Answer for mechanical systems:Use oil or grease to reduce friction!Answer for electrical systems:Making the voltage as high as possible is a good way to reduce power loss.ExplanationThe voltage drop along a conductor is proportional to the resistance and to the current carried. (V=IxR) So, for a given quantity of Power (W=VxI), if the voltage is made as high as possible there will be less current flowing and therefore less power loss.
you will need to be allot more specific on what you are trying to do here. what is the difference in amps. what is the device Generally speaking it is good practice to only use the power supply that the device is rated for. the biggest issue you will have is this Power = voltage * current (simple version) if the power supply you had was 12v at 1 amps then you ca supply 12Watts of power if the power supply you had was 12v at 10 amps then you can supply 120Watts of power Just because you can supply 10 amps, and all you need is one, means your power supply is bigger than it needs to be. The device will draw what it is intended to draw. Just make sure the voltage matches.
In America it should be 60hz. But you can hook up a power meter to the line and find out the real frequency and voltage of the common household or office power line. You may be surprised at the number of spikes and drops in voltage and frequency in a household line. A good UPS can some times tell you as well.
The power supply is always batteries. Many series and different voltages. The popular voltage is like imalent flashlight in 2.8V--9V.
A computer power supply takes the AC power coming from a wall socket, and then converts it into lower-voltage DC to power all the components inside. Almost every component of a computer will connect directly to the power supply, with the exception of smaller parts such as fans, which can pull power through the motherboard.
It tells the motherboard that the "Power is Good". PG stands for Power Good.
Yes, it can be faulty. Some damaged power supplies show good output voltages on the voltage range of a multimeter but, when you connect them, they don't work properly. One possible reason is that maybe an IC in its voltage regulator has a high resistance between the common and the output. You cannot see this by shunting a voltmeter onto it. You have to place a typical load onto the output to test it.
Dave, By the description of the initial troubleshooting, have you taken the following steps? I apologize if they bave been answered: 1. Have you swapped the power supply with a known good power supply? 2. Have you tested the voltages on the power supply itself? It is possible to test the power supply voltage with a multimeter and the clever use of a paperclip, I can explain more if you wish to pursue this. Additionally, while it is possible to replace items at the component level, e.g. voltage regulators, capacitors, etc, It as Louis R has mentioned, rarely worth the money or time spent. If you have 100% ruled out that the power supply is not the, or at least part of, the problem. I wouldn't recommend repairing in this case. My main reasoning is, that if the power supply did fail and now the motherboard is acting strange, there may be more damage to it than you can see.
The best power supply I've used is the Hurricane digital power supply, it has many features my favorite being that it remembers your last settings.
The power supply's power-good signal prevents a computer from operating on improper voltages and potentially getting damaged. Typically, a computer will only start up after receiving the power-good signal.
In a resistive load circuit, the power = multiplication of voltage and Current. By increasing the voltage power will not be increased. Power is defined by the load as per its design. If the voltage is higher the load current will reduce. However running a load at double the rated voltage is not good for the device. Insulation may fail.