Talema 10VA transformer board

Description: All DAC boards include a power supply section. It is sufficient to connect only a power transformer. This board is designed for a toroidal 10VA transformer manufactured by Talema, which features pins for PCB connection and exhibits minimal electromagnetic field radiation to the surrounding area. The board also includes a set of fuses, a power switch, and terminals. The circuit features terminal X1 for connecting the power cord. The voltage flows through the main switch S1 and fuse F3 to the primary winding of power transformer TR1. From the transformer, two secondary windings connect through fuses F1 and F2 to the output terminals X2 to X4. The output winding S1, designated for the positive branch, is duplicated to facilitate easy connection of an S/PDIF decoder.

The DAC board's power supply section is a critical component, providing the necessary voltage and current to ensure optimal performance of the digital-to-analog conversion process. The use of a toroidal transformer, specifically the 10VA model from Talema, is advantageous due to its compact design and low electromagnetic interference, which is crucial in audio applications to maintain signal integrity.

The primary side of the transformer is connected to the AC mains through terminal X1, which serves as the input for the power cord. The power switch S1 allows for manual control of the power supply, while fuse F3 provides overcurrent protection for the primary circuit. This ensures that in the event of a fault, the fuse will blow and disconnect the transformer from the mains, protecting both the transformer and the connected circuitry.

On the secondary side, the transformer has two windings that are routed through fuses F1 and F2 before reaching the output terminals X2 to X4. These fuses are essential for protecting the downstream components from potential overcurrent conditions. The output winding S1 is specifically designed for the positive branch of the power supply and is doubled to simplify the connection to an S/PDIF decoder, which requires a stable and clean power supply for optimal operation.

Overall, the design of this DAC board’s power supply section emphasizes safety, efficiency, and minimal electromagnetic interference, making it suitable for high-fidelity audio applications. The combination of robust components and thoughtful layout ensures reliable performance in various audio setups.All DAC boards includes supply part. It is enough to connect only power transformer. Here I offer board for toroidal 10VA transformer manufactured by Talema which has pins to the PCB and it has very small radiation of electromagnetic field to the neighbourhood. Board also includes set of fuses, power switch and terminals. Circuit includes terminal X1 for connecting of power cord. Voltage goes over main switch S1 and fuse F3 to the primary winding of power transformer TR1. From the transformer goes two secondary windings over fuses F1 and F2 to the output terminals X2 to X4. Output winding S1 designated for positive branch is doubled for easy connection of S/PDIF decoder.