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.THERMOSTAT
This device is not very complicated and consists of the heating element, the mercury column and the solenoid. When the current is switched on starts to operate the heater — closed working contacts of the relay. When it starts to heat up the mercury, and the column rises to the level of the contact turns 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.
The majority of apartments have internal wiring is three wires, one of which is zero, and the other two are derived for the switch. In the slot of the switch there are three wires, two for the chandelier and one of phase. This combination in petrokova the chandelier only four possible combinations: 0; 2; 3; 5 (lamp).
the Designers often have to choose the right transmission ratio, and in this regard to look for suitable veins. The case is ungrateful, requiring large expenditures of time. It is much easier to do the right sprocket myself. Especially because making them at home is not so difficult.
It differs from steering devices based on electromagnets less weight, reliable fixation of steering, more traction and efficiency. The memory block machine provides a return of the rudder to neutral position (NP) without additional commands.
The making of this very fun toy is easy even to schoolchildren. Decorated under stylized electronic owl, she will fit well in any interior. Location — wall mounted, connection to the electrical power outlet and “functioning”… Should only pull the signal cord as the owl anxiously wave her wings and looks around the space “hypnotic” gaze (bright orange flash of the eyes — neon lamps).