In selling there are a number of relatively inexpensive electronic musical instruments (EMI) of Chinese origin that fall within the price category of a toy. However, inherent in their electronics capabilities can reach far enough beyond the “toy”, and the user is often not specified. So, I purchased keyboards AMY SK-4901 (33.e.) the in which includes rhythm programming by the user (it is relatively expensive and quite complex polyphonic child of AMY) TO the user about its capabilities is presented sparingly enough, and in this article provides add-ons to it.CHINESE SYNTHESIZER
In selling there are a number of relatively inexpensive electronic musical instruments (EMI) of Chinese origin that fall within the price category of a toy. However, inherent in their electronics capabilities can reach far enough beyond the “toy”, and the user is often not specified. So, I purchased keyboards AMY SK-4901 (33.e.) the in which includes rhythm programming by the user (it is relatively expensive and quite complex polyphonic child of AMY) TO the user about its capabilities is presented sparingly enough, and in this article provides add-ons to it.
Design and manufacture of midget cars is one of the popular directions of technical creativity. This can be judged by the growing number of automodular presented at various technical exhibitions. Unfortunately, many of the infantile groups you have to “Torito” own way, repeating the mistakes of predecessors, not taking advantage of their good experience. In today’s post attempts to summarize the experience of autocostruzione in the laboratory of experimental modeling of the club of young technicians of the Siberian branch of the USSR Academy of Sciences.
Try to cut multiple identical workpieces on a lathe. How many times have to use a caliper! But if you make for his Studio, universal focus, the workpiece will turn out one in one — and without the frequent use of any measuring tool. Arranged focus just. In the tool post of the lathe near the cutter secured using a steel strap with a screw hole, in which is wrapped a screw. He will serve as a measuring stop is enough to set it to the desired size and fix it with the locknut. Now, to cut the workpiece of a given size, the rod from the holder just forward of the machine until it stops at the bolt head.
For portable electronic equipment need a small volume and weight of the power supply. To solve this problem relatively simply by replacing passive LC and active RC filters.
Vocational school graduates, finishing school, to protect diploma. They are often self-development: engineering and manufacturing of complex parts, assemblies, or fixtures. Cartridge-machine — theme of the graduation project of the former student of vocational school № 40, now training master M. Arkhangelsk.
Smoothly change the brightness of room lighting or hall comfortable with the thyristor voltage regulator (see Fig.). The scheme allows you to adjust the load voltage ranging from 220 V to 0, 25 W to 1 kW. But if the thyristors to supply the radiators, then it will increase to 1.5 kW. The main elements of the regulator, the thyristors V1, V2, included a counter each other and parallel to the load. They alternately pass current in one or in the other direction.
