This wouldn't be very helpful, except the polarity of electromagnets depends on the direction of current flow. Pass electric current in one direction, and the magnet's north pole will be on one side; reverse the current flow, and the north pole will be on the opposite side. In motors, ...
But while most soldering irons plug into a wall outlet, the Cold Heat tool uses batteries. Traditional irons get very hot and take a long time to cool off again, but the Cold Heat tool can heat up, melt some solder and cool off almost instantly. In one TV demonstration, someone uses ...
Make sure to match the polarity of the power source with the strip’s input. Method 4: Using a Power Bank When you’re on the go or in a situation where you don’t have access to a traditional power source, a power bank can come in handy for connecting your LED light strip. Power...
There might be occasions where you simply can’t reach the same outlet with a piece of equipment. Self-powered speakers and subwoofers come to mind. You could just “pull the ground” by using a three-prong to two-prong adapter but this represents a potential ...
Allowable reverse current ratings can be low as 50 microamps (uA). Levels substantially higher than the specified value are another way to destroy a diode junction. LED ColorIn an ordinary light bulb, electrical energy heats up a tiny metal filament so hot that it glows. The heat itself ...
For years I discussed the importance of checking and adjusting the inflation pressure in your RV tires. This needs to be done when an RV is taken out of storage, before leaving on an RV trip, and while you are traveling. One problem is, finding a portable air compressor capable of inflat...
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If more than one motor is used, observe the polarity of the terminals of the first motor and connect the terminals of this motor to the opposite polarity terminals of the second motor. This will counter rotate the motors, which when used with a left and right handed props will eliminate ...
A good alternative is to hardwire your radar detector by creating a permanent power plug for it. Rather than taking up your cig. lighter outlet, you power your detector from your car’s fuse box and run a power cable hidden along the trim of your vehicle to create a much cleaner and pr...
How to Make AC Powered "Batteries" for Your DC Powered Devices: I made this copier recently, based on a digital camera and a stand. I dig it. I also made a few modifications, one of which I show in this instructable. The digital camera I use runs on 2,0