Abstract
We point out three errors present in the circuit diagram in figure 1, as well as a further typographical error. The corrections to these errors do not have any impact on the overall conclusions of the paper.
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Firstly, in figure 1(a) the resistor RA was incorrectly placed. The correct placement is between pin 7 and the 12 V line. The correct circuitry is shown below:
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Secondly, in figure 1(b) the second equation was erroneously stated as: TB ≈ 0.693(RB + RB)C.
This should instead read: TB ≈ 0.693(RA + RB)C.