HF Impedance Transformer Kits

FT140-77, ID=.9", RFI Range .1-10 MHz, Pack of 10

SKU F140-77-10
$34.95
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FT140-77, ID=.9", RFI Range .1-10 MHz, Pack of 10
Product Details
MPN: F140-77
RFI Range (MHz): 100 KHz-10 Mhz
ID-B (in/mm): .9/23
OD-A (in/mm): 1.4/35.6
Height-C (in/mm): .5/12.7
Weight (oz/gm): 33 grams
Initial permeability: 2000
A(L): 2250

Ferrite Ring Toroid Core, ID = .9"/23mm, Mix 77. Excellent for low frequency switching power supplies. RFI range .1-50 MHz.

Bulk pack of 10.

These impedance transformer kits have been designed for the Do-It-Yourself (DIY) enthusiast and Instructor workshops on baluns and ununs for antenna matching and RFI use.

The impedance transformers are classified in ratios of 2:1 (100:50 ohm) to 16:1 (800:50 ohm).  The outputs can be configured as balanced (Balun) or as unbalanced (unun) with respect to the inputs which are considered all unbalanced coax at 50 ohms.  All impedance transformers are designed for 1.8-31 MHz unless otherwise specified.