Search RFCafe.com
More Than 17,000 Unique Pages

Please support me by ADVERTISING!

Serving a Pleasant Blend of Yesterday, Today, and Tomorrow™

Formulas & Data Electronics \| RF Mathematics Mechanics \| Physics AI-Generated Technical Data Pioneers \| Society Companies \| Parts Principles \| Assns About \| Sitemap Homepage Archive	Resources Articles, Forums Calculators, Radar Magazines, Museum Radio Service Data Software, Videos	Entertainment Crosswords, Humor Cogitations, Podcast Quotes, Quizzes Parts & Services 1000s of Listings	Vintage Magazines Electronics World Popular Electronics Radio & TV News QST \| Pop Science Popular Mechanics Radio-Craft Radio-Electronics Short Wave Craft Electronics \| OFA Saturday Eve Post
	Software: RF Cascade Workbook RF Stencils Visio \| RF Symbols Visio RF Symbols Office \| Cafe Press Espresso Engineering Workbook

Aegis Power | Alliance Test
Centric RF | Empower RF
ISOTEC | Reactel | RFCT
San Fran Circuits

TotalTemp Technologies (Thermal Platforms) - RF Cafe

Crane Aerospace Electronics Microwave Solutions

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

Espresso Engineering Workbook™

Smith Chart™ for Excel

Innovative Power Products Cool Chip Thermal Dissipation

Delta-Wye Conversions

These equations are used to transform a delta-connected set of resistances to a wye-connected (Y-connected) set of resistances.

Delta transformer winding drawing <===> Wye Y transformer winding drawing

R1 =	Rb·Rc Ra + Rb + Rc

R2 =	Ra·Rc Ra + Rb + Rc

R3 =	Ra·Rb Ra + Rb + Rc

Ra =	R1·R2 + R2·R3 + R3·R1 R1

Rb =	R1·R2 + R2·R3 + R3·R1 R2

Rc =	R1·R2 + R2·R3 + R3·R1 R3

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website: AirplanesAndRockets.com

My Daughter's Website: EquineKingdom

Windfreak Technologies Frequency Synthesizers - RF Cafe

Amplifier Solutions Corporation (ASC) - RF Cafe