ferrite choke
13 links
- QRP Balun: A DIY Project
- DIY project of a QRP Balun. Using a high permeability ferrite rod and an old B&W dipole center insulator, he constructs a choke type balun for QRP use. The balun aims to create as much inductance as possible at HF, offering a high impedance to common mode currents
[ Hits: 59 | Votes: 0 | Rating: 0 ]
- Sorbie Balun and Bottle Choke
- Homebrew a 1:1 balun consistsing of 4+4 turns of mini coaxial cable over a large ferrite core by m0pzt
[ Hits: 703 | Votes: 1 | Rating: 1 ]
- A model of the W2DU 1:1 choke balun
- Notes on making the W2DU choke balun by placing several ferrite sleeves around a coaxial cable.
[ Hits: 9716 | Votes: 7 | Rating: 2.29 ]
- Patented RF choke test
- A reproduction test of a a binocular ferrite core and winds a total of 7 turns is a patented rf choke with an unusual winding, although this winding scheme reduces the inductance, it might result in a much larger bandwidth over which the choke has a sufficiently large impedance. The Author test this model by reproducing the choke.
[ Hits: 105 | Votes: 0 | Rating: 0 ]
- Chokes and Isolation Transformers for Receiving Antennas
- Chokes and isolation transformers are essential for receiving antennas to mitigate common mode current, which induces noise and interferes with signal quality. Common mode chokes, formed by winding feedline through ferrite cores, block unwanted current effectively. Proper selection of core material and winding turns ensures resonance near the operating frequency, reducing interference. Isolation transformers further minimize interference, crucial for multi-transmitter stations.
[ Hits: 59 | Votes: 1 | Rating: 9 ]
- CWS Coil Winding Specialist
- Manufacturer of transformers, inductors coils and chokes. Custom winding, EMI / RFI Filters, Antenna Windings on ferrite rod, Antenna Winding on phenolic. Any antenna coil designs.
[ Hits: 593 | Votes: 1 | Rating: 1 ]
- Epcos
- Manufacture capacitors, sensors, diodes, varistors, chokes, inductors, ferrites and accessories
[ Hits: 364 | Votes: 0 | Rating: 0 ]
- Olympix
- Performance RFI Filters that work right at the noise sources, ferrite cores.
[ Hits: 299 | Votes: 0 | Rating: 0 ]
- A600 Power Amplifier Project
- This is a power amplifier project for a RF 600W 1.8 MHz to 70 MHz linear amplifier including a Low Pass Filter. Projects includes schematics, pictures, PCD design, fans details, note on PA ferrite chokes and assembling instructions
[ Hits: 100 | Votes: 0 | Rating: 0 ]
- Ferrite and common-mode choke
- Finding the the best ferrite material for a common-mode choke. How to create efficient ferrite cores and how to measure them
[ Hits: 185 | Votes: 1 | Rating: 10 ]
- Measured Data For HF Ferrite Chokes
- FT-240 toroids measurements. The data was measured using well-calibrated HP instrumentation. All plots have been adjusted to a frequency range of 1-100 MHz on the horizontal axis and a resistance/impedance range of 10-1,000 ohms on the vertical axis. This adjustment facilitates comparison among different materials and aids in determining their suitability for use on the HF ham bands.
[ Hits: 38 | Votes: 0 | Rating: 0 ]
- Cost-effective ferrite chokes and baluns
- In this article the author describes some new designs of ferrite loaded chokes for suppressing unwanted common mode currents at HF applied to feed lines like choke baluns, but also in the shack, applied to various coaxial, mains and data cables
[ Hits: 863 | Votes: 5 | Rating: 6 ]
- Prevention and Suppression of RF Interference to Audio Systems
- In this study, the author builds upon Muncy's research, demonstrating that radio-frequency current on cable shields affects audio systems through the "pin 1 problem" and shield-current-induced noise (SCIN). An enhanced equivalent circuit for ferrite chokes is proposed, addressing dimensional resonance and inductor self-resonance. Field tests confirm that chokes reduce interference across 500 kHz to 1,000 MHz. Guidelines for diagnosing and mitigating EMI from various sources are provided for product development and field installations.
[ Hits: 47 | Votes: 0 | Rating: 0 ]
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