When you drop the screw in inaccessible location you can easily pick it up with magnetized tip of screwdriver.Even if not magnetized, it is very easily done just by touching the strong permanent magnet.
And what to do when this feature bothers you, when you work in a small space, and small bolts and nuts keep sticking to the screwdriver tip Continue reading and find out how to make simple device that will help you solve both problems. See below short video of device described in this article working. Schematic of the device that creates such fields is on the picture below. When the coil is powered with AC current alternating magnetic field is created. In another case, when the switch is in position 2 current flows through the diode D1 and gets a half-wave rectified. My on the picture below was taken from the 230V motor that drives washing machine mechanical controller. Motor is 3.5 VA, the coil resistance is 1500R. If you want hold device by one hand it is desirable to be smaller in size and elongated shape as shown on pictures below. Perhaps a better option is to get push button changeover switch which is automaticly returned to the center position. Magnetizer Demagnetizer Use Install Rectifier CircuitMaybe a better option is to install rectifier circuit for full-wave rectification but I have achieved good results with a single diode and half-wave rectification so there is no need for that. Magnetizer Demagnetizer Use Series Because TheIf you use a little stronger coil it would be wise to put two diodes in series because the inverse peaks from coil can be very high. Cable with plug and two wires without protective ground is used in my design because the device is enclosed in a plastic box and there is no risk of electric shock. Box is made of ABS plastic so small saw and a scalpel will do just fine for all the cutting. Use heat shrinks for isolating joints that mustnt be connected by accident inside the box. The cable and switch are made to be mounted into these kind of boxes, so there should be no problems. But the coil is not, so you will probably have to glue it on box with hot glue gun or something similar. It is recommend to check all connections with a multimeter before connecting to mains power just to make sure there is no short circuits.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2020
Categories |