I think that it interests not only me, but many who because of injury, illness. or accident has lost the ability to move independently. Great care of us, the disabled, shows the state. A got a good apartment. All would be nothing if… not the stairs. For those who can’t walk or hardly move, stairs are an insurmountable obstacle.ELECTRIC SAW
This simple saw can be processed plywood, thin wooden boards, etc. On the basis of the size of 250X150 mm are mounted the following parts: 1 — the solenoid of the screw Ø10 mm, which is wound with insulated copper wire 0.2 mm (the more turns, the greater the power of the magnet); 2 — Read more…
Simply by touching the sensing element and actuates an electronic device that includes an alarm or actuator. The sensing element Ан1 — plated plate connected through a resistor R2 with a grid of thyratron MTX-90 (Fig. 1). The potential appearing ka the grid of the thyratron when you touch the plate, sets fire to it. The resulting circuit mtkh-90 pulses through the capacitor C2 is transferred to the SCR Q3 and the load (relay, lamp, siren, etc.). The circuit is powered directly from the mains alternating current. The capacitor C1 plays the role of damping resistor.
Iron or drill you need in one corner of the room, and the socket is in another. In this case you can use an extension cord. And for storage you can make a simple and practical device — a coil provided not only for coiling the cord, but to include electric instruments.
