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SHURE  REACTANCE  SLIDE  RULE
( 8_3/4"  /  22 cm )

 ``` SCALES of the S H U R E R E A C T A N C E S L I D E R U L E ***************************************************************** SHURE BROTHERS, INC. Chicago, Illinois / USA (1942) FRONT SIDE for Calculations of Resonant Frequency Problems ================================================================= (a) Capacity [μF] 0.00001 .. 1000 (fix) ----------------------------------------------------------------- (b) Inductance [H] 10000 .. 0.0001 (slider) (c) Frequency [1/s] 5 .. 50000 ----------------------------------------------------------------- (d) Capacity [nF] 0.001 .. 100000 (fix) ----------------------------------------------------------------- (e) Inductance [mH] 1000 .. 0.00001 (slider) (f) Frequency [MEG/s] 0.05 .. 500 HOW-TO-USE: (1) Set INDUCTANCE opposite CAPACITY in either *********** window - Then read RESONANT FREQUENCY opposit arrow in same window. OR (2) Set FREQUENCY opposite arrow in either window - Then read INDUCTANCE opposite CAPACITY in same window. BACK SIDE for Capacitive Reactance XC & Inductive Reactance XL ================================================================= (g) Capacity [µF] 100 .. 0.01 (fix) ----------------------------------------------------------------- (h) Resistance [Ω] 0.01 .. 10M (slider) (i) or {Ω} 0.000001 .. 1000 (j) Reactance {Ω} 0.01 .. 10M (k) [MΩ] 0.0001 .. 100M ----------------------------------------------------------------- (l) Capacity [nF] 10000 .. 1 (fix) ================================================================= (m) Frequency [1/s] 0.1 .. 1000M (fix) ----------------------------------------------------------------- (n) D = ωCR 0.00002 .. 10000 (slider) (o) Q = ωL/R 0.00002 .. 10000 ----------------------------------------------------------------- (p) Frequency [MEG/s] 0.001 .. 10000 (fix) ================================================================= (q) Inductance [H] 100 .. 0.01 (fix) ----------------------------------------------------------------- (r) Resistance [Ω] 100M .. 0.1 (slider) (s) or {MΩ} 1M .. 0.001 (t) Reactance {Ω} 100M .. 0.1 (u) [Ω] 10000 .. 0.00001 ----------------------------------------------------------------- (v) Inductance [mH] 10 .. 0.001 (fix) HOW-TO-USE: (3) CAPACITIVE REACTANCE XC *********** Set arrow opposite FREQUENCY - Read Ohms XC opposite CAPACITY. (4) DISSIPATION FACTOR D Set RESISTANCE opposite CAPACITY - Read D opposite FREQUENCY (5) FIGURE OF MERIT Q Set RESISTANCE opposite INDUCTANCE - Read Q opposite FREQUENCY. (6) INDUCTIVE REACTANCE XL Set arrow opposite FREQUENCY - Read Ohms XL opposite INDUCTANCE. Use YELLOW {BLUE} SCALES for CYCLES {MEGA-CYCLES} PER SECOND H I S T O R I C A L R E M A R K S : ***************************************************************** adapted from SHURE-HomePage www.shure.com The SHURE RADIO COMPANY was founded 1925 by Sidney N. Shure in Chicago selling successful radio parts & kits via mail-order. In 1928 his brother Samuel J. Shure joins and the company is renamed SHURE BROTHERS. 1932 Shure introduced Model 33N, the first lightweight, high-performance microphone. Model 40D a condensor microphone & Model 70 a crystal microphone follows. With Model 55 SHURE became world famous as a MICROPHONE maker. In 1946 SHURE is largest producer of PHONOGRAPH CARTRIDGES. In 1956 SHURE moves from Chicago to Evanston, Illinois. 1958 the M3D Phonograph Cartridge is world's first to meet stereo performances. 1964 the V-15 Stereo Dynetic Cartridge is one of the finest ever made: Featuring a 15-degree vertical tracking angle and a symmetrical, bi-radial elliptical stylus ... Today, Shure is a leading company for making microphones. impressum: ***************************************************************** © C.HAMANN http://public.beuth-hochschule.de/~hamann 07/20/10 ```