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    Diseño Ahuyentador Ultrasónico Agrícola
    6 μέρες left
    Βεβαιωμένο

    Especificación Técnica: Ahuyentador Ultrasónico e Iluminación Estroboscópica Profesional (5V)1. Arquitectura de Alimentación y Diagrama de Voltaje (Power Tree)Para garantizar la máxima seguridad y compatibilidad global, el equipo se alimentará exclusivamente a 5V DC mediante un puerto USB Tipo-C con protección industrial integrada. Protecciones Requeridas en el Diseño de la PCB:Filtro EMI/RFI: Bobina de choque común para evitar que el ruido de la alta frecuencia ultrasónica retorne a la fuente de alimentacióón contra Inversión de Polaridad y Sobretensión: Mediante a diodo TVS (Supresor de Tensión Transitoria) de 5, Fusible (PPTC): De 1.5A para proteger el puerto USB ante e...

    €31 Average bid
    €31 Μέση Προσφορά
    8 προσφορές

    Design review of an industrial data-acquisition system — Stage 1 Safe Instrumentación (SFI), Bogotá, Colombia, designs modular data-acquisition hardware for geotechnical and structural instrumentation installed on bridges, hydroelectric plants and pipelines, at sites up to 4,000 m above sea level. SFI has a bench-validated four-board prototype: a main controller with cellular and sub-GHz radio, isolated RS-485 and native USB; two near-identical sensor front ends, each with its own MCU, for inclination and for a long temperature chain of up to 200 sensors on a shared bus; and a carrier board for a purchased vibrating-wire module with its own high-voltage protection chain. Part numbers are released under NDA. SFI has consolidated that work into a detailed design docume...

    €1018 Average bid
    €1018 Μέση Προσφορά
    10 προσφορές
    Controller BOM Cost Optimization
    2 μέρες left
    Βεβαιωμένο

    I have a complete controller-level Bill of Materials that includes microcontrollers, capacitors, position sensors, IPMs, N-channel MOSFETs and IGBTs. The immediate goal is to drive the overall cost down without sacrificing reliability or long-term availability. Most of the boards now work with a mix of TI, Infineon, yageo, ATMEL, Microchip and STMicroelectronics devices, but I’m open to shifting to any pin-compatible or firmware-friendly alternative if it meaningfully trims the price. The same mindset applies to passive and power parts: if you can source a spec-matched capacitor, MOSFET or IGBT that lowers the piece price and is easy to get from the usual sources - China/Taiwan and their local distributors in India, i am open to it. Would prefer a Chinese/Taiwanese national who ca...

    €11 Average bid
    €11 Μέση Προσφορά
    8 προσφορές

    I need a full design package for a 500 kW ground-mounted solar plant. Using the site’s topographical features and climate data, please produce engineering-ready documentation that lets my EPC team move straight into procurement and construction. Scope of work • Drawings: deliver clear 2D CAD drawings, true-to-scale plant layout maps and eye-level 3D renderings that show row spacing, access roads, inverter stations and cable trenches. • Bill of Materials: create a detailed spreadsheet that lists every required item—solar panels, inverters, mounting structures, all cabling and ancillary accessories—complete with part numbers, quantities, and technical specs. • Geographical integration: all layouts must respect the real terrain profile, sun path and sha...

    €94 Average bid
    €94 Μέση Προσφορά
    17 προσφορές

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