“There is design review………....and there is DESIGN REVIEW”

Do your new products benefitfrom your currentdesign reviews………

or does thorough in-depthanalysis make sense for you?

VOLT AMP CONSULTING, INC.

USE EXPENSIVE LITZ MAGNET WIRE?

Your company’s tradition may not be serving its best interests today. A marginal design may have necessitated use of expensive Litz wire at one time, yet products today may unnecessarily shoulder the cost burden of this tradition.

VOLT AMP CONSULTING, INC.

VOLT AMP CONSULTING, INC.

Skin-effect currents at higher frequencies crowd into the thin outer skinof magnet wire, causing increased power dissipation due to distributed resistance.

VOLT AMP CONSULTING, INC.Current can be seen during rapid negative excursions from positive value tocirculate within a winding: positive current continues flowing in the wire core,yet negative current flows along its surface. Net current flow may be zero whiledistributed current flows still remain quite high.

VOLT AMP CONSULTING, INC.

Once high frequencies are no longer present, power dissipation behavesidentically in both single-wound and Litz wires. Where is the trade-off between responsible thermal design, and product cost?

VOLT AMP CONSULTING, INC.Control loops can become difficult to analyze. We employ Signal FlowGraphs and Mason’s Loop Rule on these occasions. The intuitive value ofthese techniques have enabled us to retro-design existing power modulesto operate in parallel. Original module precision and accuracy was retained at the system level, with no additional recalibration requirements.

VOLT AMP CONSULTING, INC.VAC’s policy is to fully document according to IEEE journal publication formatting standardsall its material contributions toward meeting your company’s goals. Reference is always ashort reach away, to re-examine methodology and premises. Future value is enhanced.

VOLT AMP CONSULTING, INC.(800) VOLT-AMP

WWW.VOLTAMPCONSULTING.COM

VAC’s analysis capabilities extend to any subject which may be amenable to modeling with electrical analogs:•optimal heatsink extrusion to trade-off weight, size, duty cycle, and maximum temperature rise;•optimal cooling fan selection based on system airflow impedance at various operational altitudes;•Mathcad and MATLAB analysis of circuit meshes using Laplace variables;•PSPICE simulation of AC, DC and Transient Response of circuits;•manual integral calculus for analytical form of solutions.

Call us for your next power consult, whether design, development, research, or analysis.