By Andrew Lohmann, Webspace since 1997
Andrew Lohmann
Curriculum Vitae CONTACT: xxxxxxxx Road xxxxxxxxxx Tunbridge Wells Kent. TN4 xxxT. (01892) xxxxxx M. xxxxxxxxx E. andrew.h.Lohmann@btinternet.com
I have an ability to interpret a concept in to a practical solution using electronics and software. My spatial reasoning is excellent. I am consensual, considerate, listening and can express confidence in my work. A merit of mine is to consider the consequences of what I do beyond the work in front of me.
My experience includes; Analogue very small signal DC-LF to MHz, digital and micro-controllers electronics, embedded C, and assembler. My work includes designing may types of sensors including; shaft encoders, temperature sensors, photo diodes, and linear image sensors that require fast data transfer into a micro-controller. Low voltage and some high voltage switch mode and linear power supplies and power drivers. DC and stepper motors, and other electromechanical devices. All achieving good function, EMC performance and first time right. Worked to LVD (Extra Low Voltage Directive), EMC, Intrinsically Safe and Automotive Industry Standards and others to attain a CE mark.
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EMPLOYMENT:
01/04/2011 to present; Available for work.
Have been involved in the local election campaign.
Taking park in Siemens SmartGrid Contest.
Some involvement with in local campaigns about a new supper store in Southborough.
Trying new alternatives to my conventional website such as adapting a blog wiki.
27/01/2011 to 31/03/2011; Time Electronics Ltd.
Unit 11, Sovereign Way,
Tonbridge,
Kent,
TN9 1RH
T. 01732 355993
R+D Engineer (Electronics) – Manufacturer of high precision test and measurement equipment
Improved on a square wave output with a rise and fall times of about 200pS with very clean transitions, flat top and bottom. I have not worked at near microwave frequency previously and do not describe myself as an RF engineer.
Selection and development of precision voltage and current sources. I have much experience in such analogue electronics.
10/01/2011 to 26/01/2011; Available for work.
14/06/10 to 7/01/2011: SEaB Energy Ltd.
Delta House
Southampton Science Park
Southampton
SO16 7NS
Electronics Design Engineer – Wind power project.
The company is a start-up which operated from; Brandon Thatch Annex, Charles Lane, Ringwood, BH24 3DA then relocated to its present address on 20/09/2010
Use CADSTAR Lite for Circuit and PCB design,
Designing and making various sensors such as temperature, vibration, air pressure, linked by serial, analogue, or RF link,
Interface PCB for a single board microprocessor,
Put together tools such hotplate so that small surface mount PCB could assembled and assembled some of the circuits deigned or specified and subcontracted that work,
Planned the connection between inverters motor/drive regenerative unit used in the Wind Turbine.
22/06/09 to 13/06/10: Available for work
Continued to keep in touch with electronics attended Electronics Weekly Trade show in Earls Court, And attended a presentation on EMC very useful. Use some demo CAD at home, and keep up to date with technology. At a creativity weekend I learnt that my temperament is “Rational Inventor” using the Montgomery short sorter.
Learn Direct causes in; Computer skills and adult literacy in English.
27/08/2008 to 08/05/2009: Wipac Limited,
Buckingham,
Buckinghamshire
http://www.wipac.com
As an Electronics Engineer I work with mechanical design engineers on car LED illumination. These are usually switch mode power supplies.
Gaining experience in achieving automotive industry standards for robustness and low electromagnetic emissions.
Circuit behaviour modelling using excel spread-sheet for various LED characteristics, such as to temperature protection and compensation with a combination NTC and PTC thermistors.
Gained experience in using a frequency spectrum analyser for conducted emission tests carried out in a screen room.
Hand soldering with surface mounted and conventional components.
08/05/2008 to 20/08/08: Remotec UK Limited
Coventry,
West Midlands
http://www.remotec.co.uk/
As an Electronics Engineer I worked on a robotic project for bomb disposal. Gaining experience in using Mentor Graphics Dx Designer for circuit design. I also gain a small amount of experience using Ethernet router integrated circuits. Some hand soldering with surface mounted and conventional components.
01/2008 to 07/05/2008:-
Umemployed: A short holiday included kitchen work – peeling potatoes etc. Was involved in the local election campaign.
1977 to 12/2007:- Bellingham & Stanley Ltd.
Tunbridge Wells,
Kent
http://www.bs-ltd.com
Manufacturer of scientific instruments. This company employed me as an Electronics Design Engineer in their Research & Development Department. I saw through the company’s transition from largely mechanical instruments to Electronics based instruments. I started as a Technician, and progressed to Design Engineer. I worked with a Project manager, Physicist, High Level Software Engineer and a Technician. I also work with a mechanical draughtsman, and other people.
I gained experience seeing a number of small and larger projects from conception and specification, through planning, design, development, final testing, and on-going revision of the instruments which the company manufactures. I used Prato analysis and half split methods to plan and manage my work. I work well in design meetings listening to and encourage alternative viewpoints.
Programming in assembler, and predominately C using PCLint to check my C code. This was my predominant job function, to interfaced with the electronics that I designed.
Designed analogue, digital, and software based filtering and averaging.
Developed the firmware to carry out the core function of all instruments, which was mostly refractometry and polarimetry. For example light level control loop. Phase measurement with variable averaging based filter. Wavelength correction of an LED using Voltage drop correlation to wavelength using linear regression. Differential method of edge detection for poorly defined light to dark transition with averaging.
Various I/O including; LED, LCD displays, Parallel, RS232 and RS485, with turn around control serial and parallel ports software and hardware.
Analog design including; integrated circuits, discrete semiconductors, and resistor networks.
Micro-controller and microprocessor design with SRAM, EPROM or FLASH, software and hardware.
Digital Design using random logic and programmable logic including; Xilinx and Atmel CPLD.
Designed linear and switch-mode power supplies both low voltage and mains voltage.
Various light detection and amplification using photo-cells, Linear Image Sensors both CCD and non-CCD types. This required low frequency low noise amplification and bandwidth limiting, or high speed data transfer to a micro-controller.
Screening and developed good practices for good Electromagnetic Compatibility.
Thermo-electric power drivers with PID control.
Stepper motor and Brush-less DC motor power driver and with speed control using a PID, with a novel quad phase comparator implemented in CPLD.
Other drivers of other electromechanical devices.
Analogue to Digital conversion, and Digital to Analogue conversion.
Simulation, creation of test, and calibration utilities using; excel spreadsheets, basic programs (VB), or paper pen and calculator.
Worked to LVD (Extra Low Voltage Directive), EMC, and Intrinsically Safe Standards.
1975-1977:- Jermyn Industries, (Arrow group)
Sevenoaks,
Kent.
Electronics Technician This was my first job after leaving college full time. Gained a good grounding in reading data sheets; the testing and selecting of Thyristors, Triacs, FETs and transistors.
QUALIFICATIONS: BTEC HND in Electrical and Electronic Engineering, with main
point in Electronics also have some experience in mechanical and optical design.
EDUCATION:
Ramsden School for Boys, Orpington, Kent. I left in 1974 with seven GCSE’s: Maths, English, Integrated Science, Electrical Engineering, Technical Drawing, 3D Design (Art), Metal Work.
FURTHER EDUCATION AND TRAINING:
1974 to 1976: West Kent College, Tonbridge, Kent, City & Guilds. Electronics.
1976 to 1983: Day release: Bromley College of Technology, Kent. Radio, Television and Electronics Technician Certificate. Electrical Technician Certificate.
BUSINESS & TECHNICIAN EDUCATION COUNCIL:
July 1984: Higher National Certificate in Electronics.
July 1985: BTEC HND in Electrical and Electronic Engineering.
OTHER QUALIFICATIONS:
1985: Diploma in Engineering Management
March-June 2010: Successfully completed Learndirect
BCS Level 2 IT User skills (ECDL Extra) (ITQ); awarded May 2010.
Improving productivity using IT, Accreditation No. J/502/4156. Level 2,
Presentation software, Accreditation No. M/502/4622, Level 2,
Spreadsheets software, Accreditation No. F/502/4625, Level 2,
Word processing software, Accreditation No. R/502/4628, Level 2
English. OCD Level 1 certificate in adult literacy Centre No.02025, Certificate No. A9835715/200858
EXPERIENCE: Analogue Circuit design: - Transistor, OP-AMPs, D to A, A to D conversion, complex resistor networks, stepper motor drive, switch mode power supplies.
Opto Electronics: - Solid state cameras (linear images sensors such as NMOS & CCDs), photo cells, LCDs, LEDs.
Digital Circuit design:- Random logic such as 4000 and 7400 series, LSI, programmable logic (CPLD) using Languages such as Able and Cupl. Various tools from manufactures such as Xilinx, Atmel.
Printed Circuit Board Layout:- CAD with CADSTAR Lite 12.1 (SEaB Energy), Pulsonix 5.0 (Wipac Ltd), OrCAD 16 (Cadence @ B+S Ltd); I can do manual layout with tape and scalpel.
Microprocessor software / hardware design:-
Motorola/Hitachi MC6801, MC9HCS12, and HD6301: I have particular knowledge of these.
Intel 8748, Rockwell 6502 (now obsolete). Some knowledge of PowerPC.
Including designing in :- DMA, battery backed Ram/clock, EEPROMs
Used various Cross Assemblers, Basic, C (in which I work mainly), and Pascal. Checking tool PC-lint. These applications run on Windows.
INTERESTS:
My interest in science and electronics started quite young. In my teens I made Power Supplies, Oscillators, Amplifiers, and an Oscilloscope. I also enjoy Walking, Photography, Community work, Travel, the Environment, and most types of music.
PERSONAL DEVELOPMENT:
I am involved in community work I have been a school governor, and was a town councillor for 12 years eight of those as chair of a committee. Central in obtaining: A bus service, bus shelter, and a pedestrian crossing.
Previously I was involved with my local Friends of the Earth group, and have experience of conducting public meetings. I have learnt how to respond to government consultation and to present a case at public inquiry. I used these skills when I became a town councillor subsequently.
Curriculum Vitae – Andrew Lohmann.doc; 14/06/2011
Andrew Lohmann