Lundahl Mains transformer, LL1648

Mains Transformers for Tube Amplifiers LL1648

C-core mains transformers. The core is assembled with a small air-gap to compensate for any mains DCunbalance. Estimated power rating 250 VA which can be increased with good cooling. Magnetic stray is extremely small if secondaries of the two coils are loaded identically.

Weight 2.5 kg

Copper resistance, no load output voltages and max recommended transformer current (rms) with primary connected to 230 V serial / 115V parallel and Sec 1 connected as above.

Primary res. Serial/parallel: 7.5 W / 1.9 W
Sec 1: 20 W / 350 V 0.63A
Sec 2: 0.1 W / 5.9 V 3.1A
Sec 3: 0.1 W / 5.9 V 3.1A
Sec 4: 0.1 W / 6.6 V 3.1A
Sec 5: 0.1 W / 6.6 V 3.1A

Please note! Output current from rectifier: 63% of above with condensor input rectifier, 95% of above with choke input rectifier.