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#1
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if your peaks are up that equates to higher (but probably not much like you
said) average output. BUT, you brought up a good point about the clipping "Frank Gilliland" wrote in message ... In , "Dr. Death" wrote: snip So you agree, it would work for ssb I agree that adding a cap across the power leads will help keep the peaks up, and that's assuming the amp isn't clipping on the peaks. IOW, it should improve the audio quality when using a less-than-perfect power supply, just as if it were an audio amp. What it -won't- do is improve your average output power by any significant margin. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#2
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I have used the BIG caps as used on the audio amps on my RF power amp and
it did help on the current spikes that was needed on SSB peaks. Without the Cap, the voltage could drop to 10.5 volts on current peaks measured at the amp, now it might go to 12 - 12.5 volts only rising to the supplied 13.8 volts in the system. It help to reduce the headlights flicker at night also. Just type in FARAD in e-bay search under car stereo. The caps can be dangerous when charged up . They can discharge VERY high amps if shorted out as their ESR is very low. 1- 30 Farads can be found, and they are not cheap either. I have seen a bank of them even crank over a 8 cylinder engine. Try that with 100,00 uF Cap. "Dr. Death" wrote in message ... if your peaks are up that equates to higher (but probably not much like you said) average output. BUT, you brought up a good point about the clipping "Frank Gilliland" wrote in message ... In , "Dr. Death" wrote: snip So you agree, it would work for ssb I agree that adding a cap across the power leads will help keep the peaks up, and that's assuming the amp isn't clipping on the peaks. IOW, it should improve the audio quality when using a less-than-perfect power supply, just as if it were an audio amp. What it -won't- do is improve your average output power by any significant margin. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#3
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In pP6Bb.465454$HS4.3620546@attbi_s01, "MasterCBer" wrote:
I have used the BIG caps as used on the audio amps on my RF power amp and it did help on the current spikes that was needed on SSB peaks. Without the Cap, the voltage could drop to 10.5 volts on current peaks measured at the amp, now it might go to 12 - 12.5 volts only rising to the supplied 13.8 volts in the system. It help to reduce the headlights flicker at night also. Just type in FARAD in e-bay search under car stereo. The caps can be dangerous when charged up . They can discharge VERY high amps if shorted out as their ESR is very low. 1- 30 Farads can be found, and they are not cheap either. I have seen a bank of them even crank over a 8 cylinder engine. Try that with 100,00 uF Cap. There's that "more power" attitude that drives an amp junkie's cravings. You need to learn what ESR is and how different it is for different types of capacitors (and batteries, too). For example, I have seen a car battery turn over an 8 cylinder engine, but that doesn't mean it has a low ESR. It just means that it can hold a big charge and has almost nothing to do with ESR. When all you want to do is to keep the peaks up in an SSB linear you don't need a charge so large that it will turn over an engine. That's called "overkill". ============= "...but I admitted I was wrong, Like a man! Something you and QRM have a problem with. You guys are wrong and you both know it and are both too small to admit it." ---- Twistedhed ---- ============= -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
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