A very simple device in order to train the hand for, say, playing table tennis, can be done in just one evening. Here are the materials you will need for this. Two boards: one size 200X300 mm (6 mm) and the other 300X150 mm thick (18 — 20 mm); Reiki 20X250 mm; the bar from which we will make the holders; a piece of wire for the installation of electrical circuits, copper wire thickness of 0.5 mm for the coil and the hook. Oh, and do not forget to prepare the light bulb from the flashlight with cartridge mounting and battery KBS-L.ONE HAND IS HARDER
A very simple device in order to train the hand for, say, playing table tennis, can be done in just one evening. Here are the materials you will need for this. Two boards: one size 200X300 mm (6 mm) and the other 300X150 mm thick (18 — 20 mm); Reiki 20X250 mm; the bar from which we will make the holders; a piece of wire for the installation of electrical circuits, copper wire thickness of 0.5 mm for the coil and the hook. Oh, and do not forget to prepare the light bulb from the flashlight with cartridge mounting and battery KBS-L.
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.
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.
