. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. RM 1 \R2 s/?r--r;. Figure attenuator with the load connected, and equate it to the generator resistance the matching conditions are met. Further, if the transmission factor of the attenuator is d, then Kin ~ VpQ ' Fin and it is not too hard to see that this equals R2(Ri + r) r R^ + R^ + r Ri' + r- R,iRr' + r) ^1 + /?2 + i?/ + r In general we know r and 6 and have to find R^ and i?2- Solving the equations we find l-d R,=r and R2 = r 1 + 6 20 1-02 A variant of the 7 attenuator which app
. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. RM 1 \R2 s/?r--r;. Figure attenuator with the load connected, and equate it to the generator resistance the matching conditions are met. Further, if the transmission factor of the attenuator is d, then Kin ~ VpQ ' Fin and it is not too hard to see that this equals R2(Ri + r) r R^ + R^ + r Ri' + r- R,iRr' + r) ^1 + /?2 + i?/ + r In general we know r and 6 and have to find R^ and i?2- Solving the equations we find l-d R,=r and R2 = r 1 + 6 20 1-02 A variant of the 7 attenuator which appears at first sight more complicated than it really is, is the 'balanced' or H form (Figure ). All that has been done to derive this is: (1) to take half of R^ and connect it in series with the other side of the generator; (2) to take half of R^ and connect it in series with the other side of the load. 17. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Donaldson, Peter Eden Kirwan. New York, Academic Press
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