USALight.com offers electronic transformers in various wattages inclucing 50 Watt, 150 Watt and 300 Watt options.
Part Number: US-ET204B Wattage - 75w max. Input Voltage - 120v 60Hz Output Voltage - 11.5v 40kHz Length: 3" Height: 0.75" Width: 1.5" 2 year limited factory warranty
Part Number: ELV-60 Wattage: 50w Input Voltage: 120v 60Hz Output Voltage: 11.5v 40 Height: 0.75" (19.05mm) Length: 2.375" (60.32mm) Width: 1.125" (28.57mm) 4 year limited factory warranty
Part Number: RL12-75A Wattage - 75w Input Voltage - 120v 50/60Hz Output Voltage - 11.5vLength : 2.08"Height : 0.79" Width : 1.30"
Part Number: ETR50Input Voltage - AC 120VOutput Voltage - 12V/50VA/60HzLength - 3 1/8"Width - 1 7/8"Height - 1 1/4"UL Recognized.
Part Number: US-ET204 Wattage - 75w max. Input Voltage - 120v 60Hz Output Voltage - 11.5v 40kHz Length: 2.375" (60.33mm) Height: 0.75" (19.05mm) Width: 1.125" (28.58mm) 2 year limited factory warranty
Part Number: LET-60Dimmable12V AC Electronic TransformerWattage - 60WVoltage - 120VFinish - Silver/BlackHeight - 3/4"Width - 1 1/4"Total Length - 9 1/4"For remote installation.
Part Number: LET-60HDimmable12V AC Electronic TransformerBottom LeadWattage - 60WVoltage - 120VFinish - Silver/BlackHeight - 3/4"Width - 1 1/4"Total Length - 9 1/4"For remote installation.
Part Number: LET-60-27712V AC Electronic TransformerWattage - 60WVoltage - 277VFinish - Silver/BlackHeight - 3/4"Width - 1 1/4"Total Length - 9 1/4"For remote installation.
Part Number: LET-60DX0-10V Dimmable0-10V Dimmable 12V AC Electronic TransformerWattage - 60WVoltage - 120VFinish - Silver/GreyHeight - 3/4"Width - 1 1/2"Length - 3 1/4"For remote installation.