Electronics Jobs

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Fixed-Price - Intermediate ($$) - Est. Budget: $120 - Posted
PSIM Analysis of Series-Parallel Resonant Converter and Report The project is to design a boost converter circuit and analysis report, with high efficiencies. They need to have reasonably low costs of components for specification given. There should be accurate calculations of component parameters and reasons why the size of components was chosen for the circuit. There should be closed loop current and voltage control design (where necessary, with PI blocks, limiters, filters, comparators, voltage sensors, voltmeters, ammeters etc.) with reasons for block use and analysis on Control design. Please refer to the completion table attached for further clarity of requirements. The circuit should simulate correctly with minimal ripple and smooth outputs. Topologies provided as attachments. Use these specifications, Specification 1: P=1MW; Vin = 20kV; Vout=50kV. 2-5kHZ is an example of the switching frequency that can be used for this converter unless discussed other idea with myself . Design the converters for OPTIMUM efficiency and show calculation overall efficiency with Pin and Pout Values; also design for lowest losses with reason for use of components and how they increase efficiency of reduce losses. I'm trying to do an investigation looking at installed power in the semiconductors, size of passive components, evaluation of losses in semiconductors, losses in magnetic components and overall efficiency (so I need all these results with calculations, equations and reasons for use). Evaluation of losses in semiconductors should be done using the thermal modules in PSIM with an appropriate selection of components and parameters. Evaluation of magnetic losses should also be done! Save SimView figures of Gate Signals, Component Voltages, Input and Output Voltages , Component Currents, processed power against Installed Power and evaluation of losses (including magnetic losses) and provide notes and calculations of losses. Analysis describing the figures. I will need an analysis of each figure to describe it and show operation (discharging, charging, Discontinuous current mode, current mode etc. ) The advantages and disadvantages should be reported and the disadvantages compared to non resonant topologies should be specifically highlighted (costs etc.) Require files to be saved in PSIM 9.0. If you require reference papers for assistance, I can attach them as well. Need completion in 2 days, maximum. and a start as soon as possible. The figures should be saved in the analysis as printed files not screen shots as enlarging will reduce the quality of the image. There should be a psim file for each part of the report for the circuit if possible please. b) circuit_with_control.psimsch file, c) circuit_with_control_and_thermal_modules.psimsch file. No time wasters please!
Skills: Electronic Design Electrical Drawing Electrical engineering Electronics
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
Hi, I am requesting assistance in connecting a scale from a windows 7 embedded POS machine to a server 2012 RDP session. The scale is connected via an Isignia Serial-USB converter. Scale works and sends signal to local machine, however, cannot get it to connect over RDP. Tried using third party software such as incentivespro.com but does not sustain a stable connection.
Skills: USB Electronics Microsoft Server Serial Port Interfacing Windows Administration
Fixed-Price - Intermediate ($$) - Est. Budget: $150 - Posted
I have a Feather WICED (based on a STM32F205RG + WICED ) , which has a 3 × 12-bit, 0.5 μs ADCs with up to 24 channels and up to 6 MSPS in triple interleaved mode and a wifi interface. I need this to provide a sampling as quick as possible over signals of 150us (every 1ms roughly) - and to stream this sample over the air. Each acquisition is supposed to be the line of an image (64 lines, 15fps, hence the 1ms period) , so I'd need to be able to refresh a 1"8 TFT as well to display acquired signal. In parallel, the uC should be able to control a servo via PWM and to send a couple of logic controls (2 max). Looking for someone to help with the programming !
Skills: Digital Electronics C Microcontroller Design Microcontroller Programming
Fixed-Price - Intermediate ($$) - Est. Budget: $350 - Posted
We are working on building IoT prototypes using various hardware and clouds platforms. We are looking for a experienced freelancers to speed up our process. You will work with our technical team with remote access. You may have to work on hardware platform from scratch and connect the hardware to cloud running some application on it. Application won't be too difficult. It can be discussed later. Hardware platforms we have are Raspberry Pi, Intel Edison, Linkit One, FRDM, CC3200. Options for cloud platforms are AWS, Azure, IBM Bluemix, Thingspeak, Sandbox etc. Programming languages we are looking forward are C, Python, Node.JS. You can even suggest platforms of your choice which can be helpful for building industry level applications. Please mention your experience with IoT in the proposal.
  • Number of freelancers needed: 3
Skills: Electronics C Electrical engineering Embedded Systems
Hourly - Expert ($$$) - Est. Time: 1 to 3 months, Less than 10 hrs/week - Posted
We are seeking a highly skilled person based within 100 miles of Brick, NJ USA. Tasks will include programming of a remotely controllable PLC (programmable logic controller). Hardware connected to the PLC for remote control, monitoring and data collection will include, not more than 10 analog sensors, not more than 10 relay or analog outputs, a Sporlan Electric Valve http://sporlanonline.com/literature/education/100-9.pdf and a Yaskawa V1000 compact vector drive https://www.yaskawa.com/pycprd/products/industrial-ac-drives/microdrives/v1000-drive This request represents minimum requirements needed by those that respond.
Skills: Electronics Arduino Microcontroller Programming PLC & SCADA