Simulation des circuits électroniques RF/Analogiques/Numériques ...
RF Components & Circuits VE3KL Session 1
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Transcript of RF Components & Circuits VE3KL Session 1
RF Components & CircuitsVE3KL
Session 1
• Ferrite and Powdered Iron Toroids• Transformer, SWR Bridge, Low-Pass Filter
Ferrite SWR Bridge Kit
Kits and PartsFT50-43 4:1 Transformer
Ferrite
Low-Pass Filter… Powdered Iron Cores T50-6
Two T50-6 Toroids 9 and 8 Turns
9 Turns #248 Turns #24
Input Output
9 Turns 8 Turns
Circuit Board and BNC Connectors in Kit
Hardware Tools Required
Very Important
With new blades
• Plus a small vice, optical magnifier, laptop PC
60 Watts
Software Tools & Links : Free
• Filter Design Software Elsie:
http://tonnesoftware.com/elsie.html
• Zplots: (Optional: uses Excel) Can use VE3KL Software
http://www.ac6la.com/
• Kits and Parts for SWR Kit Manual and Data Sheets,
Download the Toroid Calculator (include VB6 Runtime)
Look under Toroids button
http://kitsandparts.com/index.php
Materials Selection
T50-6 Powdered Iron FT50-43 Ferrite
High Q Coils/Resonators
Band Pass Filters
Low Loss Transformers
Transmission Line Transformers
EMI Filters
T50-6
Powdered
Iron Core
Inductance Formula
• L = AL*N2/1000 uH
• N = nr. of Turns
• AL = 4 for T50-6 Iron Powder Core
• AL = 440 for FT50-43 Ferrite Core
• These numbers from Micrometals Data Sheet
Fair-Rite 43 Material
Micrometals Powdered Iron Cores
FT 50-43 & T50-6
• 8 Turns, 9 Inches: 9 Turns 10 Inches
• Measure L {Low Frequency with L/C Meter}
Ferrite Iron
• Make 1 ferrite coil (9 Turns) • Make 2 powdered iron coils (8T and 9T)
• Check Measurements against Formula• Record data for filter design
End of Session 1
Ferrite Iron
Clockwise