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…
Go boom — thin, smooth beam… It should be able to every athlete: gymnast, climber, biker. Any air commando runs at him with the same ease as though walking on level ground.
The development of carrier-based jet fighter with the designation F1J firm North American beginning in the years of the Second world war. It was the car with straight low wing and front air intake. First fighter in the series did not go, but he soon interested the air force leadership, which planned to use it as a front-line fighter.
Where to store the tools, how best to equip the workplace? To these questions every fan of tinkering responds differently. Want to share the experience easy and compact work area. odnorodnogo Desk, modified and reworked (Fig. 1).
In the old humorous song about children’s aptitudes and interests it was argued that if girls are made of bows, wrappers and ropes, boys, from screws, bolts and gelecek.
Searching for the correct gear for mechanisms of control model of the submarine I looked through descriptions of many designs with the aim to choose the most simple to manufacture. In the end I decided to use as a base for such a worm gear pair from the trimmer. The most suitable turned out to be multi-turn wirewound resistor type SP5-2 with a transmission ratio worm gear i=45.
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.
— Go to Nizhneudinsk — said to me in the Irkutsk regional Committee of the Komsomol. — Where the station Director is an enthusiast of invention, teaches kids to experiment. We hold annual regional gathering of young technicians. Nijneudins it received second prize.
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.
I want to share my production version of the arcs security, which set me on a motorcycle “Java” and for more than a year of reliable service. Friends motorcyclists interested in their design: shot size, shape, etc. So I decided to offer them to the readers of the magazine.