Be careful using those diodes at sites where you're colocated with a high powered transmitter. The diodes can do some weird stuff (rectification, mixing) and could become a hidden source of interference/noise.
Greg On Nov 2, 2009, at 7:08 PM, Mike wrote: > Fine business using the diodes to drop the voltage. Many silicon > diodes will show a higher voltage drop as the current > increases. Depending on the circuit you were measuring, one with > higher current would show a larger drop. > > That is an innovative use of diode voltage drop. > > Mike > > At 04:57 PM 11/2/2009, you wrote: >> I came up with a solution for this problem for now. >> >> I use West Mountain Radio Rigrunners ( >> http://www.powerwerx.com/west-mountain-radio/rigrunner-4005.html ) to >> distribute my voltage and protect my devices on solar installs. >> Makes >> for a nice clean, easy-to maintain and troubleshoot install. They >> go up >> to 38 volt, even though they don't say that in the descriptions. >> >> I bought some radio shack 276-1143 diodes - 200V 3 amp ( >> http://www.radioshack.com/product/index.jsp?productId=2062578 ). I >> crimped a red Anderson powerpole connector ( >> http://www.powerwerx.com/anderson-powerpoles/powerpole-sets/15-amp-red-black-anderson-powerpole-sets.html >> >> ) on each end of the diode after shortening the leads a little bit. >> Then I put that inline between my Rigrunner positive terminal and the >> cable that feeds my Mikrotik device. I label the end that goes to >> the >> Rigrunner - the side of the diode without the white stripe - with >> yellow >> tape so I don't end up putting it in backwards later. >> >> I use one for each device. Drops the voltage around .6 - .8 volts, >> enough to give me the margin I need on my radios. On routerboards >> that >> are very close by (no voltage drop due to ethernet cable length) I >> put >> two of these devices in line to drop it 1.2v. I'm cleaning out the >> local radioshacks and building a bunch of these for future use. >> >> Randy >> >> -- >> Randy Cosby >> Vice President >> InfoWest, Inc >> >> 435-674-0165 x 2010 >> >> http://www.infowest.com/ >> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
