foxd@silver.ucs.indiana.edu (daniel fox) (01/19/91)
I am looking for a supplier of small ferrite beads to block rf in the 450-470 MHz range. The beads need to have a hole large enough to pass a 22 guage wire.
hanavin@udel.edu (Chuck Hanavin) (01/19/91)
In article <1991Jan18.162458.29063@bronze.ucs.indiana.edu> foxd@silver.ucs.indiana.edu (daniel fox) writes: >I am looking for a supplier of small ferrite beads to block rf in the >450-470 MHz range. The beads need to have a hole large enough to pass a >22 guage wire. A good source for torodial cores and ferrite Beads is Amidon Associates, Inc. 213-763-5771
mcovingt@athena.cs.uga.edu (Michael A. Covington) (01/19/91)
In article <1991Jan18.162458.29063@bronze.ucs.indiana.edu> foxd@silver.ucs.indiana.edu (daniel fox) writes: >I am looking for a supplier of small ferrite beads to block rf in the >450-470 MHz range. The beads need to have a hole large enough to pass a >22 guage wire. Take apart a junked TV tuner or VCR. Ferrite beads are abundant! See if a TV shop will give you a junked circuit board that has some ferrite beads on it. You'll probably get some good VHF transistors and other nice things with it.
minsky@media-lab.MEDIA.MIT.EDU (Marvin Minsky) (01/19/91)
devices?
minsky@media-lab.MEDIA.MIT.EDU (Marvin Minsky) (01/19/91)
Sorry about last message. Does anyone know if ferrite beads can reduce the RF noise from light-dimming devices?
nagle@well.sf.ca.us (John Nagle) (01/24/91)
minsky@media-lab.MEDIA.MIT.EDU (Marvin Minsky) writes: >Sorry about last message. Does anyone know if ferrite beads can >reduce the RF noise from light-dimming devices? One could try, but note that home light-dimming devices are available with or without RFI suppression circuitry. The packaging usually mentions it if it has it and says nothing if it doesn't. I changed out some of my dimmers for RFI-equipped ones, with good results. John Nagle