Home |
Search |
Today's Posts |
#4
posted to rec.boats.electronics
|
|||
|
|||
Capacitors for RF ground
In article ,
Michael Porter wrote: Can anyone (Larry?, Bruce?) help with a spec for capacitors for RF ground for a HF radio? I want to keep the DC away from the (aluminum) boat.Thanks, Michael Porter Michael Porter Marine Design mporter at mp-marine dot com www.mp-marine.com You need to define the Frequency Range of the Radio/Antenna System, and Power Output, that your trying to DC Isolate/AC Couple. If your dealing with just HF Frequencies (3-30 Mhz) and less than 150 Watts PEP, it is very easy to get a .5uf non-Polarized 600 Volt Cap, to do the job. As you Lower the Frequency, and or Raise the Power Level, you will need larger Capacitance and Higher Voltage Ratings. The whole idea here is to have the Capacitor be as low of impedance, as possible, at the Lowest Frequency of the System, and the highest Voltage Rating available which will allow the Highest Power Level. -- Bruce in alaska add path after fast to reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Capacitors for SSB DC ground block | Electronics | |||
NMEA diff. signal ground vs. DC ground | Electronics | |||
ssb ground | Electronics | |||
Anodes or Bad Ground | General |