Page 202 - The Art and Science of Analog Circuit Design

Jim Williams

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5
mentation considerations. It is significant that the total uncertainty be- Figure 11-A8.
The calorimeter
tween electrical and both calorimetric efficiency determinations was
3.3%. The two thermal approaches differed by about 2%. Figure 11-A9 measures effi-
ciency by determin-
shows the calorimeter and its electronic instrumentation. Descriptions of ing circuit heating
this instrumentation and thermal measurements can be found in the
losses.
References section following the main text.

5. Calorimetric measurements are not recommended for readers who are short on time or sanity.

Figure 11-AI.
The calorimeter
(center) and its
instrufwttrtation
(top). Caterimiter's
high degree of
thermal symmetry
combined with
sensiti¥e servo
instrumentation
produces accurate
efficiency measure-
ments. Lower
portion of photo is
calorimeter's top
cover.

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