124B

Hammond Mfg. Co. Ltd., Electronics Division www.hammfg.com 124 Series Tube Driver – Interstage Transformer 124B SCHEMATIC Features:  Designed for general purpose or replacement use in pushpull or phase inverter tube driver circuits.  Frequency response 150Hz-15KHz (+1/-3dB) @1KHz reference.  Unit has no gap for DC bias current present in SE mode. Not recommended for single ended applications.  Open style with minimum 6" long leads out.  49% Nickel laminations for greater fidelity compared to 124A with grain-oriented steel.  Available in coil-only configuration for enthusiasts’ own choice of lamination (model 124C)  Weight: 5.9 oz. PRIMARY RED 10K Ohms SECONDARY GRN1 BLK 90K Ohms CT BLU GRN2 ELECTRICAL SPECIFICATIONS Characteristics Typical Input Impedance Output Impedance Output Power DCR RED-BLUE DCR GRN1-GRN2 Dielectric Strength Temperature Range 10K Ohms 90 KOhms CT 5W 405 Ohms ±20% 1525 Ohms ±20% 500V RMS up to 105 degC Inductance | Impedance PRI RED-BLUE Leakage Inductance PRI RED-BLUE @ 150 Hz, 2.0 V OC 65.38H 71.46 KOhms @ 150 Hz, 2.0 V SC 37.4mH GREEN BLACK GREEN RED BLUE Minimum 6" leads out DIMENSIONAL DETAILS: 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. PERFORMANCE GRAPHS:      MEASUREMENT INSTRUMENTS dScope Series III Audio Analyzer (THD+N & Phase Shift Graphs) Wayne Kerr 3255B with a 3265B Inductance Analyzer Voltech AT5600 Wound Component Tester (Frequency Response Graph) HP 4192a LF Impedance Analyzer Keithley 2010 DVM **The results are typical and are subject to normal manufacturing and electrical tolerances. Hammond Mfg. Co. Ltd., Electronics Division www.hammfg.com TEST CONDITIONS PRIMARY R S/ 2 R S/ 2 SECONDARY RL OUT Release 2: 11052020