Scientific Instrumentation, Consumer Products & Audio.
Hardware, Firmware and PCB layout.
Taking an active involvement in product design
from initial specification through development to
assisting with manufacturing, documentation and
production samples.
Scientific Instrumentation
Underwater Instrument
FlashLamp PSU and Trigger Pack.
A specially developed low
power circuit using a Switched Mode Power Supply for charging a
capacitor to 1200 volts. A custom "Trigger Pack" (shown un-potted)
reduces the quiescent charged load on the supply by half from that of
the Hamamatsu module previously used.
The supply has a low
standby current and can charge to 1200 volts on demand in under 10 mS
giving a top operational rate of 100 flashes per second from a special
high quality
Xenon
short arc flash lamp which is a point light sources providing
high luminance and colour temperature.
The flash lamp emits a continuous spectrum of
light, ranging from ultraviolet through visible to infrared.
Filters select the light wavelengths of interest for excitation and a
photodiode detector measures the amount of light returned to the
instrument.
Consumer Products
Prototype Design Concept Ergonomic Flat Split-Hand Keyboard.
Developed as an alternative to
Maltron's full 3D
ergonomic keyboards this design is to provide as much relief as possible
for people who are suffering from "Work Related Upper Limb Disorders" WURLDS and "Repetitive Strain Injury" RSI problems but who want a more
conventional keyboard.
Read the
British Computer Society Review 2004 article
"Let's talk sense about keyboard induced pain"
for some background as to why these ergonomic keyboards are so
important.
I also designed alternative symbols to the Micro$oft
Windoze and Menu keys so that one keyboard layout could be used
interchangeably for PC, Linux and Mac systems.
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The Art of Sound Reproduction.
My audio designs developed between 1992 and 1996 which
include Sphere Speakers, a separate Bass Speaker and the Zeus Audio Amplifier.
Please see my
Audiophonics
website for further information.
Zeus Amplifier
Schematic - 1994 (updated 2004)
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