Šifra 86442 Brand APPLE

Šifra 86444 Brand APPLE

Šifra 86445 Brand APPLE

Šifra 88240 Brand APPLE

SPECIFIKACIJEDEKLARACIJA Frekventni opseg zvučnika 20Hz-20kHz Frekventni opseg mikrofona 20Hz-20kHz Otpornost na vodu i prašinu IP54 Uparivanje NFC; BT Vreme razgovora up to 14h non-stop Vreme mirovanja up to 420 hours Proizvođač JABRA Opis ULTRA-LIGHT NOISE CANCELLING BLUETOOTH® HEADSET Tip mikrofona 2 x MEMS Boja Black Dimenzije 110.7mm x 61mm x 25.4mm Osetljivost mikrofona -42±1dB（0dB=1V/Pa, at 1KHz) Vreme punjenja up to 150 minutes Prečnik zvučnika 10,3mm Težina 20g Verzija bluetooth-a 5.1

SPECIFIKACIJEDEKLARACIJA Otpornost na vodu i prašinu IPX4 Proizvođač TCL MOBILE Boja Bela Baterija 750 mAh,USB Type-C, Up to 6 (ANC off) / Up to 30 with charging case (ANC off) / Up to 4.5 (ANC on) / Up to 26 with charging case (ANC on) Težina Slušalica 4.2 g, Kućište: 36 g Verzija bluetooth-a v5.0

58963) TRANSONIC AERODYNAMICS NUMERICAL ANALYSIS , Petrović Z. , Stupar S. , Mechanical Engineering Faculty University of Belgrade 1996 ; Contents : 1 Introduction 1.1 Preliminary Remarks. 1.2 Governing Equations 1.3 Simplifications to the Governing Equations 1.3.1 Definition of an Adiabatic Flow. 1.3.2 Definition of an Irrotational Flow 1.3.3 Crocco`s Theorem 1.3.4 Isentropic Gas Relation 1.4 Algebraic Form of Energy Equation for Steady Adiabatic Flow 1.5 The Isentropic Form of the Energy Equation 1.6 The Momentum Conservation Laws. 1.7 Isentropic Shocks vs. `Real World Shocks` 1.7.1 Rankine-Hugoniot approach 1.7.2 Isentropic approach 1.8 Techniques for Handling Shocks in Potential Flow Calculations 1.9 Summary 2 Transonic Small Disturbance Equation 2.1 Preliminary Remarks. 2.1.1 Treatment of Flow Angle of Attack 2.2 Definition of Disturbance Potential 2.3 Boundаry Conditions for Flow at the Body Surface 2.4 Derivation of the TSD Equation 2.5 Properties of the TSD Equation. 2.6 Finite Difference Terminology 2.7 Conservation Form vs. Non-Conservation Form 2.8 Finite Difference Expression Form of the TSD Equation in Subsoni 2.9 Murman-Cole Switching in supersonic Regions 2.10 Discretization Error Associated with Equation (2.2) 2.11 Loss of Conservation Property due to Switching 2.12 Murman-Cole Switching in Conservation Form 2.13 Application of Boundary Conditions 2.13.1 Region Ahead of the Leading Edge: (1 2.13.2 Region of the Slit: (ILE SITE) 2.13.3 Region Downstream of the Trailing Edge: (ITE << Imax 2.14 Far Field Boundary Conditions 2.15 Relaxation Procedure for the TSD Equation 2.15.1 Gauss-Seidel Scheme 2.16 The Point Successive Over-Relaxation (SOR) Scheme 2.17 The Line Gauss-Seidel Iteration Scheme 2.18 The Thomas Algorithm 2.19 Solution of the SLOR Scheme to TSD Equation 2.20 Summary 3 The Transonic Full Potential Equation 3.1 Introduction 3.2 Jameson`s Rotated Difference Scheme 3.3 Transformation of the Continuity Equation to a Curvilinear Coordina System. 3.4 Boundary Conditions. 3.4.1 Boundary Condition at the Solid Surface 3.4.2 Boundary Conditions at the Far Field... 3.5 Governing Equation for Axisymmetric Flows in the Transformed Plan 3.6 Construction of the Body-Fitted Coordinate system... 3.6.1 H-grid, algebraic approach 3.6.2 O-grid, algebraic approach. 3.7 Construction of C-Grids Around Airfoils 3.8 Generation of the Orthogonal Grid... 3.9 Discretization of the Governing Equation 3.10 Computation of Metrics at Half Points 3.11 Computation of Densities and Contravariant Velocities.. 3.12 Relaxation Procedure for Solving the Full Potential Equation 3.12.1 Interior Points 3.13 Summary 4 Numerical Technique for Designing Airfoils 4.1 Introduction. 4.2 Optimization Approach 4.2.1 Design Objective 4.2.2 Design Point 4.2.3 Starting Point. 4.2.4 Design Variables 4.2.5 Design Constraints 4.2.6 Black Box. 4.3 CONMIN to Black Box Coupling. 4.3.1 Optimization Process 4.4 Inverse Design Techniques. 4.5 Carlson`s Inverse Design Technique.. 5 Unsteady Transonic Potential Flow 5.1 Introduction. 5.2 Governing Equations 5.3 Unsteady Transonic Small Disturbance Equation 5.4 Boundary Conditions. 5.5 Low-Frequency Approximation 5.6 Characteristic of the Low-Frequency Transonic Small Disturbance Equation. 5.7 Discretization of the Low-Frequency Small-Disturbance Equation. A Solution of the diagonal system of equations A.1 Three diagonal Equation System A.2 Quad-Diagonal Matrix System B Selected Papers paperback, size 20,5 x 29 cm , English , 152 pages

Sandberg Solarni punjač i powerbank 420-73 20000mAh/7.5W/USB-C Model 420-73 20000mAh/7.5W/USB-C Tip Solarni punjač i powerbank Ostalo Sandbergov Solar 6-panelni Powerbank 20000 vas zaista pruža svu snagu potrebnu za sve vaše uređaje, sa do 8 punjenja standardnog pametnog telefona. Kada ste daleko od utičnice, powerbank možete brzo napuniti preko velikog, preklopnog solarnog panela koji se sastoji od 6 solarna panela. Na ovaj način ste sigurni da ćete uvek moži da napunite svoju opremu. Dobijate 2x USB-A priključka kao i 1x USB-C PD 20W priključak za brzo punjenje. Takođe je priložena karabinjer kuka za vešanje na šator ili na ruksak radi solarnog punjenja. Solarni panel se može uključiti i isključiti prema potrebi. Ovo je fantastično rešenje za punjenje mobilnih uređaja, za porodični odmor, planinarenje ili neku drugu avanturu. Kapacitet: 20000 mAh / 74 Vh Tip baterije: Li-polimer Mikro USB ulaz: 5V/2A, 9V/2A, 12V/1.5A (18V mak) USB-C ulaz 5V/2A, 9V/2A, 12V/1.5A (18V mak) USB-C izlaz: 5V/3A, 9V/2.22A, 12V/1.67A (20V mak) USB-A izlaz 1: 5V/3A, 9V/2A, 12V/1.5A (18V mak) USB-A izlaz 2: 5V/3A, 9V/2A, 12V/1.5A (18V mak) Solarni panel: 7,5 V IPKS4 Vodootporan Temperatura punjenja: 0℃~45℃ Temperatura pražnjenja: -20℃~45℃ Podržava napajanje

tvrd povez dobro ocuvano 1 Power Generation Systems is the first to focus on protection of motors and generators from a power generation perspective. It also includes workbook constructions that allow students to perform protection-related calculations in Mathcad® and Excel®. This text provides both a general overview and in-depth discussion of each topic, making it easy to tailor the material to students` needs. It also covers topics not found in other texts on the subject, including detailed time decrement generator fault calculations and minimum excitation limit. The author clearly explains the potential for damage and damaging mechanisms related to each protection function and includes thorough derivations of complex system interactions. Such derivations underlie the various rule-of-thumb setting criteria, provide insight into why the rules-of-thumb work and when they are not appropriate, and are useful for post-incident analysis. The book`s flexible approach combines theoretical discussions with example settings that offer quick how-to information. Protective Relaying for Power Generation Systems integrates fundamental knowledge with practical tools to ensure students have a thorough understanding of protection schemes and issues that arise during or after abnormal operation.

- USB C adapter za napajanje, PD punjač, podržava PPS GaN II, 20 W, - Kompatibilan sa MacBook Pro, MacBook Air, iPhone 13 Pro, iPhone 12, iPad Pro, Dell XPS, Galaxy S22, S21, - Nova GaN II tehnologija, - Inteligentna distribucija energije, - Bezbedan i pouzdan: USB C brzi punjač je opremljen inteligentnim čipom za zaštitu vaših uređaja od kratkog spoja, prenapona, pregrevanja i viška struje.

- Struni razdelnik i punjač UGREEN CD270 (60167) DigiNest Pro 100W, - USB-C punjač 100W 3xUSB-C + 1xUSB-A, - Boja: svemirsko siva, - UGREEN punjač je opremljen sa 3 USB-C porta, USB-A portom i 2 AC utičnice, - Može da puni i napaja čak 7 uređaja istovremeno i podržava PD 100W tehnologiju brzog punjenja, - Poboljšani dizajn proizvoda je omogućen zahvaljujući GaN II tehnologiji. Dužina kabla je 1,8 metara, - Upotreba punjača je potpuno bezbedna, a njeno upravljanje je olakšano ugrađenim dugmetom, - Upotreba poboljšanih GaN i SiC tehnologija je obezbedila konverziju energije od 95%, što se prevodi u veću efikasnost uređaja, - Ne morate da brinete o bezbednosti svojih uređaja, - UGREEN provodnik obezbeđuje zaštitu od prenapona, kratkog spoja, pregrevanja ili udara, između ostalog, - Štaviše, materijal proizvoda je vatrootporan, - USB ulaz: 100-240V~ 50/60Hz 1.8A MAKS, - USB-C1/C2 izlaz: 5.0V=3.0A 9.0V=3.0A 12.0V=3.0A 15.0V=3.0A 20.0V=5, 0 A 100.0W MAKS, - USB-C3 izlaz: 5.0V=3.0A 9.0V=2.5A 12.0V=1.88A 22.5W MAKS, - USB-A izlaz: 4.5V=5.0A 5.0V=4.5A 5.0V=3.0A 9.0V=2.0A 12.0V=1.5A 22.5W MAKS, - Ukupna USB izlazna snaga: 100.0W MAKS, - Dužina kabla: 1,8m.

- Nexode punjač UGREEN CD327, - UGREEN punjač obezbeđuje 65W snage punjenja, - Podržava više protokola brzog punjenja i omogućava vam da povežete do 4 uređaja istovremeno, - Brojne bezbednosne karakteristike obezbeđuju visok nivo bezbednosti, - Pored toga, punjač se odlikuje kompaktnom veličinom, tako da ga možete poneti sa sobom skoro svuda, - UGREEN punjač će vam omogućiti da brzo napunite svoje uređaje, - Proizvod podržava brzo punjenje u standardima Power Delivery, Quick Charge, FCP, AFC, SCP i BC 1.2, a nudi i punjenje sa snagom do 65 wati. Dakle, možete napuniti bateriju svog iPhone 14 na 50% za samo 27 minuta ili svoj MacBook Air za 45 minuta! - Proizvođač: UGREEN, - Model: CD327, - Dimenzije: 71 x 29 x 74,5 mm, - Ulaz: 100~240V, 50/60Hz, 1.8A Maks.. - Izlaz: USB-C1/2: 5V / 3A, 9V / 3A, 12V / 3A, 15V / 3A, 20V / 3.25A, PPS: 3.3-21V / 3A, 65W Maks. USB A1/2: 5V / 3A, 9V / 2A, 12V / 1.5A, 10V/ 2.25A, 22.5W max, - Protokoli brzog punjenja: USB-C: PD 3.0, PPS, QC 4.0, SCP, FCP, AFC, BC 1.2 USB-A: SCP, QC 3.0, FCP, AFC, BC 1.2, - Maksimalna snaga: 65 W, - Dužina kabla: 2 m.

- Ugreen brzi punjač GaN USB / 2 x USB C 65W adapter EU / UK / USA utikač crni (CD296), - Brzi punjač kompanije Ugreen je savršen gadžet za zahtevne korisnike, - Model CD296 će moći da napuni vaše elektronske uređaje za vrlo kratko vreme. To ga čini idealnim izborom za rad u kancelariji ili kod kuće, - Zahvaljujući upotrebi galijum nitrida (GaN) tehnologije, možemo računati na visoku efikasnost punjenja sa optimalnim dimenzijama punjača, - Ukupna snaga svih izlaznih snaga je 65W, - Model CD296 ima podršku za protokole brzog punjenja, uključujući: Power Delivey, Quick Charge, što u isto vreme čini bezbednim za upotrebu, minimizirajući rizik od kratkih spojeva ili pregrevanja elektronske opreme, - Možete biti sigurni da će punjač takođe prilagoditi trenutnu vrednost potrebama vašeg uređaja, optimizujući proces punjenja i smanjujući gubitke energije, - Punjač je opremljen adapterima za napajanje kompatibilnim sa Evropskom unijom (EU) i Velikom Britanijom (UK) i Sjedinjenim Državama (SAD). Ovo vam omogućava da ponesete punjač na put u drugu zemlju, - Brend: Ugreen, - Model: CD296, - Boja: Crna, - Tip konektora: 1xUSB+2xUSB-C, - Ukupna snaga: 65W, - Napajanje (ulaz): 100-240V / 1.8A / 50-60Hz, - Izlazna snaga: USB: 4.5V/5A, 5V/4.5A, 5V/3A, 9V/2A, 12V/1.5A (22.5W) USB-C1/C2: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.25A, 3.3-21V/3A (65W), - Podrška za punjenje: Power Delivery 3.0 / 2.0 Quick Charge 4.0+ / 4.0 / 3.0 / 2.0.