Pspice Models Nickel-Metal-Hydride Cell - 02/02/95 EDN Design Ideas: The nickel-metal-hydride (NiMH
) battery model in Listing 1 accurately predicts the discharge characteristics of an NiMH
cell (or groups of cells). The model accounts for: ampere-hour (Ahr) capacity of the cell; cell resistance; differing cell capacity, depending on low- and high-rate discharge characteristics. The basic cell model is accurate for 0.001 to 5C discharge rates, where the 1C rate is a battery-industry term for the current that will discharge a cell to its cutoff voltage (usually 1.1V) in exactly one hour. Design by Steve Hageman PSpice tunes oscillators - 10/09/97 EDN Design Ideas: A previous Design idea (Reference 1] proposes a simple technique to extend the frequency range of a tungsten-lamp-stabilized crystal oscillator (Figure 1). The idea involves taking into account a simplified first-order expression for the frequency-dependent gain of the op amp. After some Design by Lutz von Wangenheim, Department of Electrical Engineering, Hochschule Bremen, Germany
PSpice used for Thevenin equivalents - 04/23/09 EDN Design Ideas: A simple method lets you obtain the Thevenin voltage and resistance and the Norton equivalence with the aid of simulation Design by David Karpaty Analog Devices Inc, Wilmington, MA
Pulse Width Modulation - (spice design) __ Designed by Rick
Push-Pull Output Stage - (spice design) __ Designed by Rick
Quasistatic Spice Model Targets Ceramic Capacitors with Y5V Dielectric - 08/24/12 EDN Design Ideas: Run more accurate Spice simulations by accounting for the capacitance variation versus applied voltage. Ceramic Y5V SMT capacitors have recently become available in values and sizes that were previously available only with electrolytic capacitors. At first glance, they may seem a worthwhile unpolarized alternative to electrolytic capacitors, and they sometimes are. These capacitors, however, have a capacitance that is a function of the applied voltage. Design by Hugo Coolens, KaHo Sint-Lieven, Ghent, Belgium
Questions & Answers on the SPICE Macromodel Library - AN41 Linear Technology This note provides answers to some of the more common questions concerning LTC's Macromodel Library. Topics include hardware and software requirements, model characteristics, and limitations and interpretation of results. __ Linear Technology/Analog Devices
RC Low-Pass Filter - (spice design) __ Designed by Rick
Routine Implements Spice-3 Inductor Mode - 09/01/95 EDN Design Ideas: in Spice-2G6 and other Spice derivatives, a dc-bias-current effect, modeled by a polynomial equation, is a part of the basic inductor model. This equation is built into the source code, so you need only specify the coefficients of the polynomial equation. The Spice-2G6 netlist is as follows: L1 1 2 POLY L0L1 L2 L3 L19 Design by Martin O'Hara, Newport Components Ltd, Milton Keynes, UK |