Talema Electronic [ India ] Pvt. Ltd manufactures Small Size Open type Toroidal Transformer. Talema Electronic [ India ] Pvt. Ltd is an ISO 9001: 2000, ISO/TS - 16949: 2002 and ISO 14001: 2004 certified company. The Small Size Open type Toroidal Transformer is available with a single 230V a.C. 50/60Hz primary winding and can be connected to Twin secondary windings in series or parallel or can be used independently.