1650R

Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com 1650R "CLASSIC" PUSH-PULL TUBE TYPE ULTRA-LINEAR OUTPUT TRANSFORMERS         Designed for push-pull tube output circuits. Enclosed (shielded), 4 slot, above chassis Type "X" mounting. Frequency response 30 Hz. to 30 Khz. at full rated power (+/- 1 db max. - ref. 1 Khz) minimum. Insulated flexible leads 9" min. Manufactured with plastic coil forms for coil support and insulation. Typical applications - Push-Pull: triode, Ultra-Linear pentode, pentode and tetrode connected audio output. Due to the unique interleaving of the windings BOTH secondary windings must be engaged to meet specifications (see hook-up diagrams below). Suggested tube types: 807, 5881, EL34, 6146B, 6550B, KT88 ELECTRICAL SPECIFICATIONS Characteristic Typical Input Impedance Output Impedance Output Power 5000 Ohms 4, 8 & 16 Ohms 100 Watts DCR Primary Blue-Red Primary Red-Brown Secondary Black-Green Secondary Black/Yel-Yel 54.59 Ohms 46.62 Ohms 0.300 Ohm 0.420 Ohm Inductance | Impedance Primary Brown-Red Leakage Inductance @ 60Hz, 10.0V OC 320H 145KOhm Primary Brown-Red @ 60Hz, 10.0V SC 10.84mH Dielectric Strength Temperature Range 2500Vrms -40 To 105C LABEL: 1650R M a d e In C a n a d a DATE Note: The above examples of possible combinations are to help you narrow down the choices of transformers for your favorite tube types. How you operate the tubes (push-pull, push-pull parallel, ultra-linear, class, B+, bias, operating points, etc.) will change optimum plate to plate load impedance. Only a few of the most popular tubes are shown. As more tubes become available we will add them to the list. A tube manual or tube manufacturer's technical data sheets should be consulted first, before making a decision on a proper output transformer. Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com DIMENSIONAL DETAILS: YEL GRN/YEL BLK/YEL GRN BLK BLU BLU/YEL RED BRN/YEL BRN 3.750in ±0.063 3.000in Ø0.203 x 0.375 ±0.063 4.590in ±0.063 TEST CONDITIONS Measurement Instruments: dScope Series III Audio Analyzer Wayne Kerr 3255B with a 3265B Inductance Analyzer HP 4192a LF Impedance Analyzer Keithley 2010 DVM * All graphs input level 27dBu @1.0KHz reference. **The results are typical and are subject to normal manufacturing and electrical tolerances. 4.188in 3.063in ±0.125 ±0.063 TYPICAL TEST CIRCUIT PRIMARY R S/ SECONDARY 2 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 used in any manner whatsoever without the written permission of Hammond Manufacturing. Data subject to change without notice. Hammond Mfg. Co. Ltd., Electronics Division www.hammondmfg.com