A souvenir depicting fairy-tale “the Firebird” with the use of LEDs, can make even novice hams. The details of the electric circuit, except the LEDs are placed inside a plastic soap dish suitable sizes, are the basis. Two red (or orange) led, is inserted in place of eyes, connect to the unsymmetrical multivibrator, and seven flashing LEDs in the tail feathers twinkle themselves. Details of the scheme: VT1, VT2, R1, R2, C1 is located on the PCB about the size of 40×20 mm, which is fastened inside the base by two screws M4. The power switch (microtubles) is displayed on the top cover.
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The coil is the most convenient form of packaging thin sheet materials and for the transportation and storage in warehouses. Foil, a synthetic film or paper in a tightly collapsed become a monolith, convenient in handling and are not particularly suffering from the hard grips of different mechanisms.
Built-in furniture for country attic. As a rule, country attic (the so-called well-maintained loft happy owners shestietazhnyj plots) — the room is not too large, so that linen cupboard and a couple of beds can take most of it. Meanwhile in the attic for placement and cabinets, and beds it is possible to use the volume located between the sloped roof slopes and vertical walls.
The idea is to make the jigsaw came to me many years ago, but brought it to life much later — when I got someone thrown the faulty sewing machine production Podolsk factory. From the “inside” machines only took the main shaft and the node of the “needle bar”, and other parts dismantled. Cut and the front part of the platform, leaving only a foot under the bar of a G-shaped case. On the sandpaper I ground off all the tides on the lower surface. The bearing at the corners of the drilled hole and through them, inverted the machine was attached to the top of the pedestal bottom. By the way, the Cabinet is also used from the old foot-operated sewing machine. However, to find such a Cabinet should be harder than the machine itself. But it may or may not be made of chipboard with 20 mm thick Top cover closed steel sheet thickness of 1.5 mm (and dural).
Who in the circus like children? Of course, fun and funny clown. And a shaggy red wig, and bright baggy clothes with huge shoes, and tricks — all causes kids (and adults) happy laughter. Such a funny figure of the Croatian magazine “ABC technology” and offers parents do for their children, perhaps with their involvement because if you do not cut, then paint the bright colors of the clothing of a clown any boy.
Creating some kind of mechanism or tool, the person usually by its name defines its main functional purpose. So, saw, saws, drill — sowing, the hole punch punch holes, and, say, a wrench used for screwing or unscrewing the nuts.
Rare design can be build without the use of welding, particularly electric arc. This is why a good welder is a dream for many designers and enthusiasts. The “heart” of it — the welding transformer, which will be discussed. Winding step-down transformer (Fig. 1), connected to the original circuit (Fig. 2) provide arc stability. For welding use electrode Ø 3 mm, designed for AC current. (In the forced mode of the transformer it is possible
To facilitate and accelerate mounting of mounted units and structures it is proposed to use a modified fastener — some modified gostowski the bolt and nut. The modification applies to their threaded parts on which are four symmetrical groove equal to the width of the remaining protruding threaded segments. Such design dramatically reduces the traditional time in the operation of screwing and defines a new technological approach to the works of this kind that is important in case of unfavorable working conditions or low temperatures.
One arm movement — and in an unusual vise clamped firmly from two shafts, the diameter of which can reach up to 120 mm. the Design of this hot clip is rather simple, based on it — four prisms, pnevmotsitami and clamp. Works device is isolated. Compressed air through the check valve, which prevents the clamp from camerascreen when the pressure of air on the network. Moreover, the operating pressure is maintained in the cavity of the cylinder for a time sufficient for its completion.