Output Transformers KE57613-E

 

	This special cored universal purpose KE57613-E tube output transformer, which is a C+ derivate and excists only on paper.
	KE57613-E, Roger's Ultimate Output Transformer has the following design parameters: Primary windings (50W): - 3X230V@45Hz with 40% taps (Imax=0.22A) Secondary windings: - U0=6.5VX4, Imax=5A Miscellaneous data: Dimensions/Weight: 52X100mm/1kg Total primary inductance: 80H@5V/50Hz (95H@10V/50Hz) Leakage inductance: - Total primary DC resistance: 200Ohm Maximum power input: 50W@230V/15Hz Inductance vs DC unbalance: 67H@+/-5mA (33H@+/-20mA)   Which makes the transformer useful as for instance: - Standard Williamson OPT using push-pull KT66/807/6L6GC/EL34 drive with 8Ohm speaker load only (15Wsin@807). - Boosted Williamson OPT using push-pull KT88/6550/PX25/300B drive with 4-8Ohm load (Psqr@6550>30W, +/-30% Class AB if biased@6R). - Universal OPT using true Ultra Linear push-pull KT88/6550 drive with 4-8Ohm load (Psqr@6550>50W). - May also even be used as mains isolation transformer for f.i tube preamps (<2X230V@0.2A/60Hz, 4X6.5V@<5A) KE57613-E, The ultimate Knoppson OPT taps and additional features

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