SOWTER Type U070

PUSH-PULL OUTPUT TRANSFORMER FOR KT88 ETC FIXED BIAS GENEROUS DESIGN

 

PACKAGE OPTIONS STYLE CODE
Fully Shrouded S
Encapsulated P+
Drop Through T
APPLICATION A Very high performance output transformer for push-pull KT88 or similar valves operating in fixed bias mode.
FEATURES Highest grade low loss (M6) grain oriented silicon iron core for minimal distortion. 14 interleaved winding sections to maximize bandwidth and ensure clean transient response. Two chamber bobbin to ensure full geometric balance. Low copper resistance to minimize losses and maximize loudspeaker damping. 4 separate secondary windings (See below) for optimum matching to load without the use of tapped windings which can reduce HF response.  Other secondary configurations available at time of order. Various package options.
 Typical characteristics Impedance  DC Resistance Inductance 
PRIMARY  4500 ohms 99.6 ohms 106H
SECONDARY   16/8/4 ohms 0.54 ohms
(16 ohm config)
0.38 mH
(16 ohm config)
Leakage inductance referred to primary 2.65 mH
Turns Ratio (16 ohm config) 16.8 : 1
POWER (For 0.5 % Distortion at 25 Hz) 100 W
DISTORTION (30 Watts at 1000Hz) 0.05 %
DC QUIESCENT CURRENT 200 mA
FREQUENCY RESPONSE 4K5 ohm source (+/- 1.5 dB) 5 Hz to 70 kHz
E A Sowter Ltd
PO Box36 IPSWICH IP1 2EL England
Tel: +44(0)1473 252794
Fax: +44(0)1473 236188