Talema Electronic [ India ] Pvt. Ltd supplies Low Noise Open Wound Toroidal Power Transformer. Talema Electronic [ India ] Pvt. Ltd is an ISO 9001: 2000, ISO/TS - 16949: 2002 and ISO 14001: 2004 certified company. The Low Noise Open Wound Toroidal Power Transformer is extremely small in size and is available with tapped 0-115-230V, 50/60Hz primary windings suitable for connection to either 115V or 230V supply. The Power Transformer can be connected to Twin secondary windings in series or parallel or can be used independently.