custom transformers flyback transformer low voltage transformers CUSTOM TRANSFORMERS Dyco Electronics is a manufacturer of high voltage power supplies & custome transformers for the static elimination ind. , 115 & 230 volt inputs with 4,000 to 8,000 volt outputs. Prototype & design svc. J-STD-001 certified soldering instructor on-site. Custom transformers are devices made to your specifications and employed in an electrical circuit that changes a voltage on the primary winding to a different voltage level on the secondary winding(s). This change is made through a reciprocal coupling effect between the primary winding and secondary winding(s), with the magnitude of alteration determined by the ratio of turns between the windings. If the primary winding has greater turns than the secondary winding, then the voltage induced in that secondary winding will be decreased by an amount equal to the turns ratio between the primary & secondary winding. A custom transformer that does this is referred to as a Step Down Transformer. Whereas in custom transformers that has a primary winding with less turns than the secondary, then the voltage induced in the secondary winding is increased by an equal amount to the turns ratio, this device is called a Step Up Transformer.