Recent content by rlnthndr

Talk about bringing back some old memories wow I have been away too long. Yeah I remember talking with Devlin for a while several years back, after Peek decided to step away for a while, when he was building that 6 and also trying to get help on figuring out the bias scheme for the 12 that was...

Sup homie, Here is a free bump and a wave. Maye I will get back on here some more seeing as how some old familiar faces are starting to show up again.

Keep in mind a battery doesnt like to be charged to fast. Therefore the transformers used in alot of the battery chargers do not do for excessive extended amounts of current being pulled. The larger battery chargers I have seen are good for usually 50A continuos pull, and peak at 100A or so...

Note you could also use scr's for regulation that operate similar to a SMPS but with out the noise and cleaner output.

As QRN said 18VAC on secondary which would be @ 25VDC once rectified 18*1.414=25.5ish. QRN is is possible I could get you to shoot me that shematic? Don't believe I have any for tripp lite PS's. I will PM you an email addy if you will.

Not sure about tripp lite but I was thinking that the transformers for alot of those supplies were 18-24VAC on the secondary then they are rectified and are regulated from there thru a voltage regulator and pass transistors. Ask the tech support guys what voltage should you be seeing at the...

I see I made an assumption(we all know what that does) that he was using the 2-to220 transistors and a voltage regulator(to220) per 2 transistor module. The assumption was thinking that the 2 transistors would be used for thermal regulation. Interesting. So is he using the transistor on the...

Like Bob said if you look at where the choke goes it is a pad that has a wire from under the board coming up in the center. This wire should run back to the relay's center leg and toggle between the bias supply when biased and ground when not. Crusher that can be done via a transistor used as...

Nice looking Bob. I see the bias transistors for each 2 transistor section(what trans. did you go with), but where is the supply for the driver? Did you pull off of one of the other two? Also out of curiousity is this setup like the one used by skywalker(homebrew amatuer not the cb one)...

Quote: Interesting point since the recommended driver for a 2x2879 comp amp is a 1x2290 amp. And here I was thinking that comp/competition was slang for a Homebrew HF amplifier,they sure look and act like many I have seen minus a few parts on the input and output, atleast the solid state...

Since you are doing AC/DC conversion why not look at using scr's to regulate the power supply? I know it is still a little cost but not near that of a linear supply or switching and as far as noise goes it is very low i.e. not noticable. I will have to dig around and see if I can find some of...

So what is the polarization of this thing? Most all spiral like antennas seem to be horizontally mounted not vertically. Also did I read that right a half-wave that does not need matching? I guess it depends on where you tap the feed lines to the spiral? I am no antenna guy just curious.

SCOTT(KI4MSJ), I know this is off topic but good to see a local here. Westlake area of SML.....

I believe he was refering to the 16 transistor units that use a transformer for teh final combiner. DTB maybe you can answer a question I have had about those. Doesn't combining the amplifiers in that method make the output port 1/2 of the input. I.E. both 8 transistors outputs are 50 ohm...

I am dont work on alot of radios but I would suggest going to cbtricks.com. You can get a schematic, layout, etc.. of that radio as well as alighnment procedures and such. Or atleast you should be able to.