THE REFRIGERATOR IS 0°C!

IN THE REFRIGERATOR AND 0°C!In the journal “modelist-Konstruktor” has repeatedly published materials on the makeshift “fridges” where to store your products use natural cold which in the middle zone of our country, not to mention its North, more than enough. In all of these devices when too much frost, the optimum temperature is maintained by heating the food. The sensors used for this are very different, but for some reason, nobody comes to use the effect of phase transformation. In short, a physical phenomenon accompanying the freezing and melting of water.

SHARE EXPERIENCES

SHARE THE EXPERIENCEIt is known that if two are going to swap, say, apples, then in the end they will still be an Apple. Well, if these two will exchange ideas, then each will have two ideas…
This idea is incorporated in the letter of our reader A. K. Kartseva from Yasinovataya, Donetsk region. About Aleksey Konstantinovich making models of ships and acquired this most interesting case a lot of experience. He offers readers a six technological and design tips and at the same time encourages modelers to share their experiences.

THE DROP DOWN BOARD

DROP FEEIn electronic equipment with high density have more difficulties to get to various units and parts when setting up or replacing them during the renovation. Therefore, in the serial devices are widely used in various moving joints of construction elements. However, in Amateur conditions is not always possible to produce such compounds.
I have developed a small swivel to boards, light covers and walls of buildings. Combining some PCBs (Fig. 1) are compact unfolding structure. The same can be produced fully or partially drop the case.

ORDINANCES CHROME PLATING

SECRETS OF CHROMEIn the “M-K” No. 8 for the year 1991 was published an article devoted to the technology of processing of shells for cylinder-piston pairs of current model engines. Judging by the numerous reader responses, this topic is highly relevant and widely recognized. Therefore, in addition to already published material, we offer a number of tips that will allow Amateur and professionals made the crossing of the micro-motors to reach the heights of excellence in their field.

SIMULATOR SOUNDS

IMITATOR OF SOUNDS“Development, published in the journal “modelist-Konstruktor”, make ourselves photoelectron shooting. Works flawlessly. It is a pity that the sounds in the scheme is not provided. Help!”. The fraction of machine-gun fire, screeching min, heavy bass bombs… Simulates a similar sound picture of the fight is pretty simple device, made only three transistors.

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THE MAST ON THE ROOF

MAST ON THE ROOF

It is probably impossible to imagine a contemporary house without radio and television. But for good reception of distant stations, TV channels (as well as for individual communication on approved frequencies) need a good, raised high above the ground antenna. So, not to do good without masts. Only here where to put them and how to fix?

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SECOND LIFE

SECOND LIFE

CUBE…
 
Probably not many times I burnt my fingers when soldering resistors, tubular ceramic capacitors and the like in the form of radio parts. Feeling, know, not pleasant, not to mention the effects of the blisters. And I made a good protect your fingers from burns when soldering. It’s Teflon, Teflon or even the rubber block has grooves of various sizes. Use it when soldering the parts is quite simple.

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