With the continue increase prices of the electricity while the financing of agriculture is remaining the same, agricultural production is increasingly difficult to satisfy the needs of the population with food production. Under these conditions the role of energy-saving technologies in agricultural production is relevant. In particular, very important is the use of optical radiation for irradiation of dairy herds, poultry and plants. In this article, methods of energy saving are presented, identified on the basis of long-term theoretical and practical research of the authors and their graduate students. The reliability of this research is confirmed by defended theses, the theoretical and practical achievements, the protocols of experiments, acts of economic and factory tests. The authors hope that this information will provide practical assistance to numerous small farms in our country while choosing energy-saving lighting technologies.
This work contains analysis of characteristics of automobile lamps by Philips, KOITO, ETI flip chip LEDs, Osram, General Electric (GE), Gtinthebox, OSLAMPledbulbs with H1, H4, H7, H11 caps: luminous flux, luminous efficacy, correlated colour temperature. Characteristics of the studied samples are analysed before the operation of the lamps. The analysis of the calculation results allows us to make a conclusion that the values of correlated colour temperature of halogen lamps are close to the parameters declared by manufacturers. The analysis of the study results has shown that, based on actual values of correlated colour temperature, it is not advisable to use LED lamps in unfavourable weather conditions (such as rain, fog, snow). The results of the study demonstrate that there is a slight dispersion of actual values of luminous flux of halogen lamps by different manufacturers. Maximum variation between values of luminous flux of different lamps does not exceed 14 %. The analysis of the measurement results has shown that actual values of luminous flux of all halogen lamps comply with the mandatory rules specified in the UN/ECE Regulation No. 37 and luminous flux of LED lamps exceeds maximum allowable value by more than 8 %. Luminous efficacy of LED lamps is higher than that of halogen lamps: more than 82 lm/W and lower power consumption. The results of the measurements have shown that power consumption of a LED automobile lamp is lower than that of similar halogen lamps by 3 times and their luminous efficacy is higher by 5 times.
This paper examines the characteristics of LED filament lamps from various manufacturers: LLC “ Lisma “(Russia), an American company with production in China “ GENERAL LIGHTING CO.LTD”, a joint Chinese-Russian company “ Uniel “and Taiwan company” Smartbuy “ in the A60 bulb – the time of stabilization of characteristics, luminous flux, colour temperature, colour rendering index, flicker index, radiation spectrum during 6000 hours of burning. The research was carried out on the Gooch&Housego measuring system. The results of experimental studies that showed that the clear leader in the test results is the lamp SDF‑8 (LISMA), according to GOST of all tested samples of led filament lamps, it can be recommended for lighting in lighting devices for household lighting.
In this work, the concept of creating a lamp with a variable light distribution in a single housing was chosen, the characteristics of the uniformity of illumination, the values of the average brightness over the studied surfaces of the developed lamp layout with LED light sources were analyzed. As LED light sources, lamps of the MR16 type are used with an emission angle of 36 degrees, a power of 4.5 W, a luminous flux of 400 lm, a color temperature of 3000 K at a temperature of 36 oC, with an angle of 80 degrees, a power of 5 W, a luminous flux of 305…315 lm, color temperature 4000 K, with an emission angle of 100 degrees, a power of 5 W, a luminous flux of 440 lm. An analysis of the measurement results allows us to conclude that the color temperature of the lamps is close to the parameters declared by the manufacturers. 3 lighting projects were created. For each project, 4 lighting options were made with different combinations of lamps.Suspensions were used to save energy and increase light output. The result of this study was data on the use of the developed lamp. It was found that the lamp has a great potential for use, due to the fact that it has the possibility of using various LED lamps and due to the mobility of its individual modules. When combining lamps with radiation angles (from right to left): 36, 36, 100, 36, 36 and using a 0.3 meter long suspension, the most optimal lighting option is achieved.
The work is devoted to the development of a prototype of an electronic clock based on a 176 series microcircuit. To create a prototype, an integrated circuit K176ID3, LEDs (VD1, VD2, VD3, VD4, VD5), an indicator (VD6), momentary buttons (KK, KM, KR , KN), capacitors (C1 – 47 pF, C2 – 1500 pF, C3 – 0.01 μF), resistors (R1 – 9.1 kΩ, R2 – 1 mΩ, R3 – 100 kΩ, R4 – 100 kΩ, R5 – 1 kΩ; R6 – 100 kOhm). The stages of assembling a prototype are described in detail. In the course of this work, a circuit was made on microcircuits of the K176 series with counters – K176IE12, K176IE13 and a decoder – K176ID3. The K176IE12 microcircuit generates the necessary control signals (including, for the operation of the indication and minute pulses). The K176IE13 counter counts minute impulses and performs the function of an alarm clock. From the outputs of this counter, the time readings are displayed on the indicator through the K176ID3 decoder. The role of cathode switches is performed by logic inverters K155LN2 (with an open collector). The K176IE12 microcircuit consists of three parts.
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