Litres per second or how fast your bath fills. It depends on how big your supply pipes are. If your water supply has a low flow rate, you won't be able to fill your swimming pool in 10 minutes. If your water supply can fill your pool in 10 minutes, you can still use it to connect a drip-watering system for your pot-plants that only draws a cupfull a day of water. If the laptop requires 19V you should use an power-supply that provides the same voltage.
If the power supply voltage is significantly more, it will damage your device and could start a fire. If the voltage is less, the device will not work, actual damage is less likely.
If the laptop need to draw 4. More is ok. Less means the device will probably not operate correctly. See Choosing power supply, how to get the voltage and current ratings? Normally when you use adapter, that has lower power output than the device you supply power to requires, adapter will simply heat up and die. In case of laptops, where battery has some charging logic, it will probably not charge or take very long time to charge, depends on how you use this laptop.
I don't know if the adapter will explode in this case though. I will certainly not recommend using lower amperage adapter than Toshiba specifies. Sign up to join this community. The best answers are voted up and rise to the top.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 8 years, 4 months ago. Active 8 years, 4 months ago. Arc welding is a constant current process, but the arc length has an effect on voltage. Reducing the arc length will decrease the voltage, and this reduces the heat in the weld. Increasing arc length will increase the voltage. Arc length faults can share many similarities with the current faults later on this page.
Beginner welders tend to move the rod too quickly, especially those who are transitioning to arc welding from another welding process. The pool of molten slag is wide, tall and bubbly, and shouldn't be mistaken for the weld pool! The weld underneath the slag will be about half the width of the molten slag pool, and it takes longer than might be expected to build it up.
Experienced arc welders say they can see the weld through the slag pool they say it is darker and more red in colour. Welding rod boxes are marked with their recommended current. For my Murex rods the 2. Where in the range you work will depend on the position of the work, but for beginners setting the amps right in the middle of the range should rule out most faults due to incorrect amps.
Arc Welding Faults The faults in these photographs are a little exaggerated. Arc Length Faults There's some detailed information including a video demonstrating the effect of arc length on the learning arc welding page. Arc Length Too Short This weld was laid with the end of the rod covered by the molten slag.
The surface of the weld is uneven where it has been dragged along by the rod, and the weld will be low on power and contain slag inclusions. Interestingly, while most people think of electricity in terms of voltage, the most dangerous aspect of electrical shock is the amperage, not the voltage. Voltage and amperage are two measures of electrical current or flow of electrons.
Voltage is a measure of the pressure that allows electrons to flow, while amperage is a measure of the volume of electrons. An electrical current at 1, volts is no more deadly than a current at volts, but tiny changes in amperage can mean the difference between life and death when a person receives an electrical shock.
Although the physics are complicated, some experts use an analogy of a flowing river to explain the principles of electricity.
In this analogy, voltage is equated with the steepness, or pitch, of the river, while amperage is equated with the volume of water in the river. An electrical current with high voltage but very low amperage can be seen as a very narrow, small river flowing nearly vertical, like a tiny trickle of a waterfall.
It would have little potential to really hurt you. But a large river with lots of water amperage can drown you even if the speed of flow voltage is relatively slow. Of the two, amperage is what creates the greatest risk. Different amounts of amperage affect the human body in different ways.
The following list explains some of the most common effects of electrical shock at various amperage levels, according to the U. To understand the amounts involved, a milliampere mA is one-thousandth of an ampere or amp. A standard household circuit that supplies your outlets and switches carries 15 or 20 amps 15, or 20, mA.
This gives you an idea of just how much danger there is in the home wiring system we take for granted, where wires carry 15, or 20, mA.
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