你一定会成功
Wurth Electronics Midcom Inc
DFM
Safety in transformer
EMI consideration when design transformer
New material and product
Transformers
•Less than 100W unless
•Freq < 500kHz
•Current < 20A -Using Parallel Windings
•Low voltage offline (Vin <300V or 400VDC)
•Dielectric <= 4.5kV for offline
•Safety Agencies -IEC60950 and IEC61558-2-17
Custom Inductor
•PFC Coil
•Shape core buck inductor
•
虎纹捕鸟蛛
Common mode choke with shape core
What Wurth Midcom focus on
Capability but not focus on
Toroid inductor
•Limited High Turns Capacity
•Wire Size to 15AWG
•Special Winding Techniques Difficult to Duplicate Amongst Many Operators
量词歌Foils Winds and Foil Shields
•Rule of Thumb is an Extra Dime per Foil
科技小报内容
Tubing Eliminates any Possibility of High Speed Auto Winding and Termination
Product in the future
Planar transformer
•250 Watts
•150 Watts •Transformers for tube light •20 Watts
•30 Watts
Design for manufacturability
敬畏历史Pinout
中国气象科普网
Wire size vs. number of strands
不求甚解
Coil build
Electrical specification / tolerance
Shelf tape and insulated wire (introduced in safety)马拉松多少公里
