hammond mfg. co. ltd., electronics division www.hammondmfg.com 140REX chassis mount ? shielded impedance matching transformer this transformer operates in the 20 hz to 20 khz range. the metal can provides excellent shielding from a broad range of external sources. while the nickel core provides high perm eability combined with low losses. typical applications input/output isolation, line matching, driver, hybrid applications. electrical specifications characteristic typical input impedance 600ct ? output impedance 150 ? output power 10.0 dbm dcr primary 72.4 ? red ? brn 36.2 ? brn ? yel 36.2 ? secondary 18.2 ? inductance @ 1.0 khz, 1.0 v oc primary 3.62 h secondary 0.88 h impedance @ 1.0 khz, 1.0 v oc primary 61.5 k ? secondary 15.6 k ? frequency response 1db from 20 hz to 20 khz turns ratio 2:1 insertion loss < 1.0 db return loss 22.5 db longitudinal balance - 65 db dielectric strength 500 vrms 140REX 5mw 20hz - 20khz made in canada grn - blu: 150 ? red - brn - yel: 600 ct ? date primary secondary blue green 600 ct ? 150 ? red yellow schematic diagram brown
typical test circuit measurement instruments hp4192a i mpedance analyzer hp3456a dvm keithley 2002 dvm d scope series iii audio analyzer this drawing and the information in it is the property of hammond manufacturing. it may not be reproduced, transmitted or use d in any manner whatsoever without the written p ermission of hammond manufacturing. data subject to change without notice. primary secondary r l r s / 2 r s / 2 out
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