Plastic body ball point pen is often broken, especially at the tip, near the writing unit. Operational offer a way out: to tighten tight the rod in a paper tube, taped the edge of the strand. This “ball” will serve to securely purchase the new. N. ALIKIN, St. P etersburg
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THE CAR IS UNDER PROTECTION OF ELECTRONICS
E-the guard mounted on the car "Lada", emits intermittent alarm signals if someone opens the door, hood or trunk of a car. How does such a device? The position switch B1 on the...
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The voltage is from 1 to 12 In intervals of a single oxen allows to obtain a transformer, the circuit of which is shown in the figure. If desired, the switching is easy to implement...
