There are numerous ways to make current, to the ball of yarn did not run away and not out somewhere. The easiest is to put it in a box, basket, or, as shown in the drawing, just the right size jar.
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In every apartment — large I malogabaritki — usually, there are two tables-one in the room, the other in the kitchen. For families consisting of two to four people, it is a necessary...
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(Four steps to excellence). 1. Noise reduction (background with a frequency of 50 Hz). In parallel, each diode in the rectifier of the AC power supply (PS) located in the body of one of...
