The company Ty-Ohm from Taiwan is the largest manufacturer of wirewound resistors globally. In more than 6 billion chargers and power supplies Ty-Ohm’s wirewound resistors have been used already.
To limit the inrush-current arising during the charging-process of the DC-link capacitor, Ty-Ohm offers a wide range of wirewound resistors. They are available in axial, radial and in SMD- version, as well as in a ceramic case filled with cement. Optionally all types can be offered with an integrated thermal fuse.
A detailed description of the benefits to limit inrush-currents with Ty-Ohm’s wirewound fixed resistors instead with a temperature-dependent resistor (NTC or PTC) can be found in this White Paper.
The White Paper also explains Ty-Ohm’s specified fusing characteristics Standard Fusing, Fail-Safe Fusing I and Fail-Safe Fusing II.
For further information to Ty-Ohm please visit the company website or ask us for the company presentation.
If you are interested to limit inrush-currents with a wirewound fixed resistor from Ty-Ohm, then please don’t hesitate to contact me. I will be very pleased helping you to find the optimum solution for your application.