Indesign – Electronic Product Development

Indesign, LLC. Indianapolis. – Engineering Services – Electronic Product Design Engineering.

Indesign – Electronic Product Development

Activity – Engineering Design of Electronic Products and Systems. Engineering Design Center. A Company formed in 1996 by a group of Bell Labs engineers. Specializations – Electrical, Software, Mechanical, Human Factors, Testing. Areas- Consumer, Medical, Computer, Military, Industrial, Automotive, etc.

Indesign: Electrical Design

Indesign: Electrical Design

Indesign has an extensive set of tools for electrical circuit design, simulation, and testing, including programmable logic design. The combination of talented engineers and state of the art equipment, allows Indesign to deliver a design optimized for functionality and manufacturability (DFX)

Indesign, LLC.
8225 E 56th St Indianapolis, IN 46216

CheapStat – DIY Potentiostat

CheapStat: An Open-Source, “Do-It-Yourself” Potentiostat for Analytical and Educational Applications.

CheapStat – DIY Potentiostat

CheapStat, an inexpensive (<$80), open-source (software and hardware), hand-held potentiostat that can be constructed by anyone who is proficient at assembling circuits. This device supports a number of potential waveforms necessary to perform cyclic, square wave, linear sweep and anodic stripping voltammetry.

CheapStat - DIY Potentiostat

The device supports cyclic, square wave, linear sweep and stripping voltammetry over the potential range ?990to +990 mV and over frequencies from 1 to 1000 Hz. The device supports a range of environmental, food and drug quality control, and educational applications. The reverse of the circuit board supports a three-line LCD display and a joystick, which is used to select an experiment protocol, change its parameters (frequency, starting voltage, end voltage, scan rate), and initiate the experiment.

DIY Potentiostat – CheapStat – EEMetric

The device’s schematics, parts lists, circuit board layout files, sample experiments, and detailed assembly instructions are available in the supporting information and are released under an open hardware license.

Reliable Robust Electronic Products

Use a Servo Stabilizer or CVT Constant Voltage Transformer or at least an Isolation Transformer. The First Defense form HV Surges, Spikes.

High Voltage Polyester & Polypropylene Metallized Capacitors in Stepdown Supplies should be Fire Retardant & Self Healing with a MOV too.

EE Design Library – Electronic Product Design Resource

Tropicalized means immunity or resistance of an equipment in conditions of varied Temperature, RH, Insects, Fungus, Brine, small life form.

Reliable Robust Electronic Products

Reliability by Simplicity

Vital controls should be Simple Electromechanical. Supervisory and Fine Automatic controls are in Embedded Computing. Mechanical Overrides!

<< More Reliable – Mechanical, Electrical, Analog, Digital, Embedded System (Firmware), Computing System (OS+Software) – Less Reliable >>

For a given quality level, more the components or parameters, may reduce reliability. Simpler the solution, more reliable it could be.

A Product’s Life

If a product gives three years life with minimum service support it can save itself from building a bad reputation. six years will establish the brand on a long term basis, twelve years of product life you will have the user of the product selling for you.

Connectors and Interconnects

“Never Mix Electrical and Mechanical Connections” (probably from tektronix) this is a rule, more so for power connectors. Strain relief prevents mechanical stress from reaching the connector joints/spring metal. The wire terminations are also cushioned by strain relief.

The PCB and Product Engineering should ensure that the mechanical stress or load is not a job/function/role of the connector. At higher currents a small contact resistance can generate a lot of heat, worsening the contact further, similar to thermal runaway of Power Transistors.

Ananth – 1999 – updated 2002 – 2010