1650FA

Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com 1650FA HI-FI AUDIO OUTPUT MULTIPLE SECONDARY TRANSFORMER  NEW & improved version of our 1608-1650 Series multiple secondary output transformers (Re-designed secondaries for easy hook-up of secondary loads).  Designed for push-pull tube output circuits.  Units are designed to provide ample "headroom" at bass frequencies (Note the weight of each transformer).  All models have a secondary tapped for 4, 8 or 16 ohm outputs.  Enclosed (shielded), 4 slot, above chassis Type "X" mounting.  Manufactured with plastic coil forms for coil support and insulation.  Frequency response 30Hz. to 30Khz. at full rated power (+/- 1db max. - ref. 1Khz) minimum.  Insulated flexible leads 8" min.  Included 40% screen taps for Ultra-Linear operation (if desired).  Typical applications - Push-Pull: triode, Ultra-Linear pentode, pentode and tetrode connected audio output. WHT YEL GRN BLK BRN BLU *For Full Dimensional Details see page 4 BRN/YEL RED BLU/YEL Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com 1650FA ELECTRICAL SPECIFICATIONS** Schematic and Hook Up Data Characteristic Input Impedance Output Impedance Output Power Primary - DCR Blue – Brown Secondary DCR Black – Green Black – Yellow Black – White Typical 7600 4/8/16 25Watts PRIMARY 203.4 WHT - 16  252m 398m 621m Leakage Inductance Primary – Blue – Brown @ 1.0kHz, 1.0V SC 702.5mH Inductance Primary – Blue – Brown @ 1.0kHz, 1.0V OC 19.5Hy Impedance Primary – Blue – Brown Black – Green Black – Yellow Black – White @ 1.0kHz, 1.0V OC 70K 217.6 403.9 710.2 Frequency Response Dielectric Strength Temperature Range BLU (PLATE) SCHEMATIC SECONDARY See graphs for specific response, Typ. 1.0db from 30Hz to 30KHz 2000Vrms -40 To 105C BLU/YEL (SCREEN Gr) YEL - 8  RED B+ BRN/YEL (SCREEN Gr) BRN (PLATE) GRN - 4  BLK - COM Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com Dimensional Details: Label: 1650FA 25WATTS 30Hz - 30KHz BLK - GRN - YEL - WHT COM - 4OHM - 8OHM - 16OHM BLU - RED - BRN: 7600 OHMS CT BRN/YEL & BLU/YEL SCREEN TAPS 40% OF PRI VOLTS Made In Canada DATE TYPICAL TEST CIRCUIT PRIMARY R S/ 2 Measurement instruments Hp4192a impedance analyzer Hp3456a DVM Keithley 2002 DVM D scope series iii audio analyzer Wayne Kerr 3255B with a 3265B * All graphs input level 20dbu. ** The results are typical and are subject to normal manufacturing and electrical tolerances. SECONDARY RL R S/ OUT 2 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 permission of Hammond Manufacturing. Data subject to change without notice.