A variety of light device (sdes), from the simplest to the most complex — widely used for the decoration of Christmas trees, holiday youth parties and even school discos. Therefore, the readers ‘ interest, the CDS continues unabated.
Almost three hundred years ago Peter the great issued a decree “On the celebration of the New year,” which was ordered “by the noble and carriageways streets at the gate and houses inflict some decoration of trees and branches of pine, spruce and juniper”. This custom caught on with us and became very popular. In the forest nurseries of the country annually produces more than ten million specially grown trees. Nurture each tree on the “new” plantations, accounting for at least 10 years.
Although the industry produces a wide variety of beds, making the simplest variant, shown,will take just a few seconds — you just have to insert in the hole on a spool of thread the filter from a cigarette or a piece of foam. Important feature: needles are stored together with the thread.
Automatic device can be used in various models, toys that when meeting with obstacles will change their movement, as well as in everyday life (villages, for example, in the chair the lights went on in the lamp, the music began, earned the fan); to turn the light on in the premises (hallway, room, pantry); for the car alarm.
Nice in the dark frosty evening to sit by the radiant heat of the heater. But it becomes more comfortable when in it, like in a real fireplace, flickering “flame” and crackling “wood”. However, the industrial designs, simulation of burning firewood slowly, and all attempts to improve the installed impeller foil give only partial improvement results.
Repair of electronic devices in radio is associated primarily with the need to restore the holes and the possibility of damage to conductor paths of printed circuit boards. We offer universal soldering iron with suction device, solder and interchangeable tips will allow to replace the radio quickly and efficiently.
During the experiments, building various electronic projects there is often a need for a DC source of relatively high capacity. For example, the battery voltage of 4.5 V is composed of three elements of “373.” To do this, you can put them in the original container tape out cut Velocimetry (see “M-K”, 1986, № 4), bonding like candy wrappers, wrapped in heavy paper (“M-K”, 1988, № 6), or dock in a unit with paper capsules-“shirts” from the same items (“M-K”, 1989, № 11). But still to provide a sufficiently reliable contact in such cases is not always possible. That is why many are still doing the old-fashioned way — connect the elements with each other lengths of wire with rations.
Every driver knows how it is sometimes difficult to start the engine of a car on a winter morning after long Parking. However, a relatively simple device powered from an AC mains voltage of 220 V will greatly facilitate this task. The device consists of two parts (Fig. 1), one AC power supply (voltage 12 to 14 V); the second part is mounted in the engine compartment of the vehicle. They are connected to each other using a special connector.
Burned out incandescent lamps, unfortunately, not to recover but to use their metal caps is possible. To separate them from glass bulbs, the bulb wrapped in a thick cloth and crushed. Then the caps carefully and thoroughly cleaned from the composition, which to them were glued to glass flasks. The Central contact with the insulator should remain intact.
Design welding transformer I have, so experience in this are. I want to offer the readers of my last — as it seems the most successful — the development of a welding machine is not entirely conventional design.
