1.5:1 Baluns/Ununs

Switch Mode Power Supply (SMPS) Common Mode RFI/Noise Reduction Filter Kit

RFI-SMPS
$27.95
In stock
1
Product Details
MPN: RFI-SMPS
Type: NEW
Country/Region of Manufacture: United States
Filter Power Rating (PEP watts): n/a
RFI Suppression Range (MHz): 150 KHz - 10 MHz
Typical Use:: SMPS common mode noise suppression

The RFI-SMPS is a common mode noise reduction filter set which filters both the AC input and DC output of common SMPS power supplies. These filters effectively isolate the AC power cord and DC output cable from acting as antennas for the internal switching power supply generated noise. The mix 75 filters suppress RFI fundamental frequencies (and the harmonics also) from 150 KHz to 10 MHz. Simple to install on cables without any device modification.

Used for amateur and commercial radio transceiver power supplies, cable TV boxes, laptop computers, or any electronic device powered by an external switching power supply.



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50 ohm coax to 75 ohm balanced output baluns are useful for low (< 1 wavelength) dipoles exhibiting 75 ohm characteristic impedance or for matching to balanced ladder line whose endpoint impedance is near 75 ohms.

50 ohm coax to 75 ohm CATV coax connections are easily done with a 1.5:1 unun with SO-239 connectors on input and output.  Likewise 50 ohm coax to unbalanced verticals or loads near 75 ohms can be matched with a 1.5:1 unun.