You are at the best, free online 'Basic Electronics Course'. Just read the brief blocks of text, view the videos, and check out some of the screened. By adding air gaps to these ferrite shapes, the cores can be used efficiently while avoiding saturation. National Cash Register Serial Numbers. These core selection procedures simplify the design of inductors for switching regulator applications. One can determine the smallest core size, assuming a winding factor of 50% and wire current carrying capacity of 500. Ring cores (AKA 'toroids') are widely available in every grade of ferrite, compact, inexpensive and useful when relatively few turns are needed.

Magnetics Designer is a standalone software program for Windows that designs all types of layer (and sector/split bobbin) wound transformers and inductors, and generates a corresponding SPICE model. Magnetics Designer produces a complete transformer or inductor design based upon electrical specifications, including a winding sheet report and a SPICE-compatible model with parasitics. A database with thousands of cores, wide variety of materials and wire is included, including a non-linear saturable core SPICE model. In addition, you can add your own cores, wire and material information using a supplied Excel© spreadsheet.

Core vendors such as TDK, Magnetics, Philips, Thomson, Micrometals, Siemens, Kaschke, Ferrite International, VAC and Fair-Rite are represented. Further, formvar, square or double square magnet wire, Litz wire, PCB traces, or foil can be selected. Specialized wire types like those used in planar magnetics can also be added. The program predicts magnetizing and leakage inductance, inter-winding capacitance, peak flux density, DC winding resistance, high frequency AC resistance (including proximity effects and skin effect), copper loss (both AC and DC), core loss, weight, temperature rise, layer fill and window fill percentage. Typical design applications include high frequency switching regulator transformers and output chokes for off-line, full-wave and forward converters, 60 Hz single-phase line transformers, AC inductors, planar magnetics and 400 Hz aircraft transformers. Virtually any single phase, layer wound inductors or transformers that range from 10Hz to over 5MHz can be synthesized with Magnetics Designer. Compatibility: Windows 2000/XP/Vista/7/8/8.1, 8Meg RAM and Microsoft Excel is required if you want to edit or add to the core database.