Jan Wiener partly available

Jan Wiener

Power Electronics Hardware Development Engineer

partly available
Profileimage by Jan Wiener Hardware Entwickler Leistungselektronik from Geiselhoering
  • 94333 Geiselhöring Freelancer in
  • Graduation: Dipl.-Ingenieur
  • Hourly-/Daily rates: not provided
  • Languages: German (first language) | English (business fluent)
  • Last update: 24.04.2012
KEYWORDS
PROFILE PICTURE
Profileimage by Jan Wiener Hardware Entwickler Leistungselektronik from Geiselhoering
SKILLS
  • Custom Made Power Electronics
  • modeling, computation, simulation and tweaking of switch mode power converter transfer functions
  • Switch Mode Power Amplifiers (Class-D and Class-S Amplifiers)
  • Switch Mode Power Supplies (AC-DC Converter)
  • DC-DC Converter
  • active Power Factor Correction (PFC single stage and multiple stage)
  • design and specification of custom made magnetics
  • design of planar transformers and inductors
  • production optimized PCB design
  • development of EMC optimized assemblies

Products implemented in all sorts of topologies guarantee the optimal implementation of your requirements. Consumer Electronic products with the lowest possible solution in cost as well as redundant and fail-proof power supplies which assure survival in emergency situations are covered the same in our service portfolio.

Converter Topologies:
  • load independant Class-D amplifiers in half bridge, full bridge and grounded bridge configuration
  • Flyback Converter also quasi-resonant
  • Forward Converter in half bridge and full bridge configuration
  • Resonant Half Bridge Converter
  • Buck / Boost Converter
  • active Power Factor Correction (PFC single stage and multiple stage)
  • tweaking of control loop transfer functions of switch mode power converters
Electromagnetic Compatibility and Product Safety:
  • EMC-optimized construction und layout of assemblies
  • attendance of EMC-tests with subsequent design optimization
  • execution of safety approvals (CE, TÜV, NRTL, CSA, CCC)
Dimensioning of Customized Magnetics:
  • torroidal chokes
  • storage transformers (flyback applications, also quasi-resonant)
  • switch mode tranformers (forward converter applications, also resonant)
  • planar inductors and transformers
Analog Signal Processing and Control Engineering:
  • control loop optimization of switch mode power converters
  • ultra low noise and linear pulse width modulators
  • active / passive filter synthesis
  • high definition Delta-Sigma analog to digital conversion
  • professional audio circuit technology
  • low noise microphone preamplifiers
REFERENCES

position:Hardware Development Engineer
company:K-tronik GmbH (http://www.k-tronik-gmbh.de/)
sector:Electronic Service Provider
location:Munich, Germany
period:4 months (01/2011 - 04/2011)
tasks: Team leader for Inter-Connect-Module of MTR390 engine ("Tiger-Helicopter") at MTU Aero Engines Munich (http://www.mtu.de/).
operations:
  • industrialization of Inter-Connect-Module
  • dimensioning of lightning protection for the complete assembly
  • attendance of external PCB layout process
  • stress analysis according to DO-160 standard

position:Project Leader
company:BOSCH Communications Systems - EVI-Audio GmbH (http://www.boschcommunications.com)
sector:professional communications electronics
location:Straubing, Germany
period:1 year, 9 months (04/2009 - 12/2010)
tasks: Project leading of international industrialized product developments.
operations:
  • project management according to "BOSCH - Product Creation Process" ("PeP", "PcP", ...)
  • cost, quality and schedule tracking
  • reporting to upper management

position:Engineering Responsible
company:BOSCH Communications Systems - EVI-Audio GmbH (http://www.boschcommunications.com)
sector:professional communications electronics
location:Straubing, Germany
period:3 years, 4 months (09/2007 - 12/2010)
tasks: Coordination of international and interdisciplinary acting project teams during the complete product development process. Requirements management and conception of new developments.
operations:
  • technical leading of international and interdisciplinary acting project teams
  • industrialization of products in Germany and China (Zhuhai)
  • attendance of EMC and safety approvals
  • prototype development from concept to series maturity
  • coordination of production start-ups in Germany and China

position:Designing Engineer for Audio Power Electronics
company:BOSCH Communications Systems - EVI-Audio GmbH (http://www.boschcommunications.com)
sector:professional communications electronics
location:Straubing, Germany
period:5 years, 1 month (12/2005 - 12/2010)
tasks: Development of professional audio power amplifiers (Class-D Switch Mode Power Amplifiers) in the power range 500 W - 2.5 kW per channel. Development of active speakers and multi channel systems in the professional audio market segment.
operations:
  • competitor analysis
  • research on linear pulse width modulators
  • modeling/tweaking of control loop transfer functions of switch mode power converters
  • feasibility studies (Matlab, Mathcad, PSpice, LTspice etc.)
  • electrical, thermal and mechanical dimensioning of assemblies
  • layout of switch mode power assemblies
  • prototyping, debugging, etc.
  • evaluation of prototypes against commercial requirements specifications
  • speaker development (active/passive) until series maturity
  • training of students and internal staff members

TIME AND SPATIAL FLEXIBILITY
I take over remote projects which can be processes 70-100% in my own laboratory. The laboratory is equipped to develop and debug assemblies with power ratings between 5 W and 5 kW. Feel free to ask for capacities.
OTHER
For further information please visit my website: http://www.ib-wiener.de
GET IN TOUCH

I accept the Conditions

I accept the terms of the privacy policy

Note: sending your contact request is free of charge