Most radio Amateurs, unfortunately, do not publish their devices. Although sometimes their design is novelty, which still has not invented and did not. In the magazine “Radio” in may 2013, includes an article about the timer on the IC CD4060B, who ran a heated electric blankets.
If you need to smoothly adjust the light in the floor lamp, chandelier or table lamp, usually used autotransformer. However, this controller is bulky and low economical to exploit at.
Aerial bombs are divided into three types: primary, secondary, and special assignments. The first are high-explosive, fragmentation, armor-piercing, incendiary, and some others, the second is luminous and warm (they promote more successful use of bombs main destination). Finally, the flash bombs, the so-called practical bombs, smoke and other employees for special tasks, refer to the third mind.
Enlisting in the First world war, the warring countries have moved from a flat ground-water surface warfare in three-dimensional space: clumsy aircraft, recently entertained the public at fairs began to turn into a formidable fighting machine. While “under the gun” was supplied all flying equipment — including lighter-than-air: balloons became the eyes of the army and Navy, but better airships turned into bombers.
Designers snowmobiles often use the brake — it’s called scraping and is a any lever, bury in the present. Such a device will be useful on a conventional children’s sleds. It will be protected against injury, to prevent the assaults on obstacles or other capsized the sled. For “on the front strap can be set Read more…
To maximize flight time Svobodnaya model championship class, usually try to use large angles of attack. However, flying often becomes unstable due to the disruption of flow from the wing. To address this shortcoming, Leningrad Antonov an S. Matveev developed and tested in practice a system of slotted wing.
Now many are fond of underwater hunting. And luck are often determined not only by the perfection of the gun or the knowledge of the habits of the fish, but also the opportunity to see her in burrows under the driftwood, under the eaves, steep banks, thick algae. But to see anything in these shelters, even on a bright Sunny day is almost impossible, because the eyes adapt to the sudden light for a time greater than the delay time of the dense breath of the hunter. Only an underwater flashlight, but the industry does not produce such.
Oven-stove for baths, which will be discussed below, the list was designed and built by me. Prior to this was construction of a camp bath, “badger valley” with a simple stove type samovar and another bath Villa with a pretty good stove, which served as a prototype for this, which I call “the dream of the bathers”.
When working with such sensitive measuring instrument like micrometer, it is necessary to hold it with two hands — and what to hold on to what is measured! A kind of third hand may be that the bracket on the stand that allows you to quickly secure the MIC, freeing your other hand for holding Read more…
On a farmstead or cottage with furnace heating or a fireplace a trip to the woodshed for the replenishment of fuel is usually reduced to the delivery of logs just in the hands, which is not very suitable for either clothes or hands. From the old tarpaulin, unnecessary any canvas or imitation leather pitch herself Read more…
