How much is the proofing cost of high frequency transformer? How many samples can you provide?

As far as I know, this actually depends on which high-frequency transformer you are proofing. Generally, Shenzhen Chen Fei Electronics has 200 samples, and one provides 4 to 5 samples. If it is a large high frequency transformer. Maybe the number of samples will be less, because the cost is higher. You can check it online for details.