Designing Power Supplies For Tube Amplifiers Pdf Download
e52a6f0149 This reformulation yields the following. So if you have three cascaded filter stages with smoothing factors of FS1, FS2, and FS3, then the total smoothing factor is given by the following relation. Here we simply add the transformer resistance estimate to those values calculated in equations 4 and 5. However, this is all right as it gives us some voltage drop to apply to our smoothing filter. 01-24-2011,10:18 AM #30 lucroels Join Date Oct 2008 Posts 2 Originally Posted by stephenwkeller I'd be happy to host these files on my site: Thermionic Info. First, tubes are not like integrated circuits with respect to power supply requirements. Not only is this two stage filter cheaper (even though we did need to buy another 100f capacitor) it provides almost 22dBv lower ripple than the single stage design. The desire was to have a ripple reduction factor of 562 or 55dBv (from equation 17). Equation #28 . This is a good time to check our one assumption concerning cascaded filter stages.
Equation #4' . This yields a ripple level of -35dBv. Now there is one more thing to check. This is a good design solution. This process of choosing a rectifier tube may seem somewhat arbitrary at this point; and in some aspects it is. V Share Share this post on Twitter Facebook Reply With Quote . Locating this point on the chart, we find the efficiency factor to be 0.74. Now we need to check it's other ratings. The third approach is to simply add some series resistance at some point following the first capacitor after the rectifier. Now we need to fall back on some of the work already accomplished by Schade back in 1943.
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