Innovative Designs and Design
research produces innovative
technology that saves time, risk, and expense, offered as designware in
the form of technology licensing and technical books and booklets.
Visit the Innovatia
libraries for free designware.
Innovatia Books and Technical Reports
and Analog Electronics
||Analog Circuit Design will be available in early 2009 in print. At that
time the PDF version will be discontinued.
A revised and expanded multi-volume PDF edition e-book of the Handbook of Analog Circuit Design by Dennis
Feucht, published originally by Academic Press, and now streamlined as
a four-volume set. Individual PDF volumes are available via email.
Presents the basic principles of transistor circuit analysis, basic per-stage building blocks, and feedback. Presentation is restricted to quasi-static (low-frequency) considerations, to emphasize basic topological principles. Prepares the reader to analyze and design multi-stage amplifiers with feedback, including calculation and specification of gain, input
and output resistances, including the effects of transistor output resistance, ro.
Dynamic Circuit Response
Presents transient and frequency response analysis methods, with emphasis upon complex-frequency techniques; dynamic design methods for compensation of amplifier response, and impedance transformations of active devices above their bandwidths, an important but little-known topic. Prepares the reader to perform frequency-dependent analysis and design, including
high-frequency effects on input and output impedances and response compensation.
Applying the concepts developed in the previous two volumes, this advanced treatment of amplifier design/analysis emphasizes both wideband and precision amplification. Topics include bandwidth extension, noise and distortion, effects of components, instrumentation and isolation amplifiers,
autocalibration, thermal effects, current-feedback amplifiers, multi-path
schemes, feedforward, fT multipliers, buffers, voltage translators, Gilbert gain cells and multipliers.
Presents a variety of analog non-amplifier circuits, including voltage references, current sources, filters, hysteresis switches and oscilloscope trigger and sweep circuitry, function generation, absolute-value circuits, and peak detectors. Digitizing (ADCs and
DACs) and sampling (including some switched-capacitor) circuits are explained, with theory required
for design. Sampling theory is developed from both a frequency and time-domain viewpoint, with emphasis upon application to design.
Linear optocouplers and novel op-amp feedback circuits are used
in this low-distortion, dual-channel
(stereo), 150 kHz isolation amplifier design. This booklet covers design principles, including detailed design
equations, board layout, and examples.
Power pulse amplifiers deliver accurate current or voltage
pulses for pyrotechnic devices and capacitance-discharge applications. Besides articles on power pulse
generator design principles, two
pulse amplifier designs are covered in detail, with MathCAD design programs, designware files and boards.
Switching converters that charge batteries or capacitor banks
offer unusual design challenges. Two design case studies are covered in detail
in separate reports: a low-power (5 W) flyback capacitance-bank charger and a
high-power (750 W) half-bridge C-bank charger that uses a novel Innovatia
zero-power-switching circuit topology. Included are application design notes and
programs. Prototype hardware and designware files
are also available.
Ultrasonic Imager Technology
Single-board computer-based subsystem
Sharp image from A (1-D) or B (2-D polar) scans
Novel bidirectional scan synchronization and probe position
Digitized output drives polar-to-raster scan converter
For more information on licensing or buying this design, Inquire.
PG1 Pyrotechnic Pulse Generator
This 3-day course, originally presented to NASA, covers both PMS
motor and motor-drive design, including PMS motor theory, motor magnetic and
electrical design, and
motor-drive design of both control and power-driver circuits. Included are
sections on board layout, sensorless control, magnetic levitation, and Kalman filtering for
motor control. Approximately 82 Mbytes. Available on CD.
step-motor control eliminates the resonances and loss of
dynamic control due to open-loop microstepping of step-motors. The motor instead behaves like a
dc brush motor, even when changing speed. Instead of pulsing the rotor from one
equilibrium position (step) to the next, field-oriented or vector control continually
maintains correct drive phase at all rotor positions to produce constant,
Vector-summed precision phase control
is a novel application
of leading-edge motor theory that has led
to a breakthrough in accurate six-step PMS motor control for cost-sensitive applications.
This tech report describes in detail how step advancement is achieved by sensing motor phase directly, from its induced terminal voltages, and combining winding voltages vectorially to produce waveforms that correctly commutate the motor at their zero-crossings. The result is
more and smoother
torque and requires few parts to implement.
Benchtop dynos for motor characterization are specialized
and costly instruments, limiting their availability. This report describes
how to construct a dyno
from low-cost components. The approach uses either a brush or PMS motor as
the active load, as a generator. Once characterized, this generator also
functions as a torque and speed sensor. Included in the e-booklet are the detailed
mechanical drawings of dyno prototype constructed using this approach. 90 pages.
The design of electrical actuators/controllers for gear-motors,
used to actuate high-torque, low-speed mechanical devices such as quarter-turn
ball and multi-turn valves, or solar trackers, is explained in this e-booklet, based on
two designs: an optically-sensed, single-direction controller, and the VC1,
which uses Hall-effect devices and
adjustable-position magnets to set opened and closed positions or limits. Articles explain
the detailed designs, give test waveforms, and describe applications
problems and faults to avoid. Designware includes a PC parallel-port interface
program, PAL/GAL programs, gear-motor and magnet component information,
ball-valve load characteristics, and commercial valve info.
Quarter-turn ball-valve or multi-turn valve fluidic control
Position control of low-speed, high-torque mechanics
Computer interface or manual control
Single board prototype hardware mounts on Grainger line of gear motors
Design your own magnetics for switching
This suite of MathCAD programs comes with explanations and
background theory. Fill in numbers for the highlighted quantities, select core and wire types, and iterate until the design is optimized to your satisfaction. The program maximizes
primary-to-secondary-winding power transfer and calculates primary and secondary winding-window areas to maintain uniform winding loss
in the window. 360 kbytes compressed.
This e-book covers the basic theory of flight dynamics, propulsion, structural design,
rocket electronics, mission planning, and more. It develops the basic formulas of flight, rocket engine
design, instrumentation and control, assuming only a knowledge of high-school mathematics. The basic principles of flight mechanics, structural mechanics, and thermodynamics are presented. This
book equips the reader to engage in rocket activity at an amateur or low-end commercial level, and in design and development of liquid-propellant launch vehicles and missions.
Hundreds of illustrations and equations; 4.5 megabytes; 3.7 Mbytes compressed.
Contract Design & Engineering Support
Innovatia designs products
or conducts electronics research projects contractually.
Control, DSP, and Windows Expertise
Organization & People
© Innovatia, 2007. All rights reserved. JUL07 Version