hammond mfg. co. ltd., electronics divi sion www.hammondmfg.com 109K miniature epoxy potted audio transformer ? audio input, line matching and output transformers ? epoxy potted in an attractive molded case, pin type, p.c. board mount, (min. 0.187? length) ? rugged epoxy potted construction produces a completely ? seale d unit withstanding severe environmental conditions. ? in some models where no center tap is present (on the secondary), pin 5 is omitted. ? secondary may be used as primary and primary as secondary. ? will withstand soldering for 10 sec. @ 260 degrees c. ambien t temp. 85 degrees c max. power level: 2.0w @ 300 hz. to 50 khz. - freq. range @ +0 dbm is 300 hz. to 50 khz. +/ - 1.5db - freq. range @ +10 dbm is 300 hz. to 50 khz. +/ - 1.5db - freq. range @ +27 dbm is 300 hz. to 50 khz. +/ - 1.5db - freq. measurements with n o d.c. saturation. electrical specifications characteristic typical input impedance 1.5 k ? ct output impedance 600 ? ct output power 2 watts dcr primary 1 - 3 102 ? (51 ? /51 ? ) secondary 4 - 6 60 ? (30 ? /30 ? ) inductance @ 1.0 khz, 1.0 v oc primary 2.4 36 h secondary 1.011 h leakage inductance 6.68 mh impedance @ 1.0 khz, 1.0 v oc primary 16.81 k ? secondary 7.021 k ? frequency response 1.5db from 300hz to 50khz unbalanced dc 6ma max. turns ratio 1.58:1 dielectric strength 100 vrms te mperature range - 40 to 105 c** made in canada 1 2 3 4 6 5 primary secondary schematic diagram 1 2 3 6 4 600 ? 1.5 ? ct 5 ct pcb layout n.t.s.
typical test circuit measurement instruments hp4192a impedance analyzer hp3456a dvm keithley 2002 dvm d scope series iii audio analyzer **the epoxy that is used to cast these parts has a workable temper ature range of ? 40 c to +105c under a normal rate of change, this does not include thermal shock. variations in the transformer materials and environmental conditions may reduce the workable temperature range. this drawing and the information in it is th e property of hammond manufacturing. it may not be reproduced, transmitted or used in any manner whatsoever without the writt en permission of hammond manufacturing. data subject to change without notice. primary secondary r l r s / 2 r s / 2 out
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