Column: Circuit drill


Figure 2: Heat dissipation curves vs. R3, R4 values


Te plot of the data points collected during the experiment are shown in Figure 2. It can be seen that the circuit’s heat dissipation is at its peak when R3 and R4 are 30kΩ each. If their values change beyond 30kΩ, the heat dissipation of the UAF42 IC decreases. It is also important


to note that the heat dissipation fluctuates with each frequency change. Te experiment confirms that the


UAF42’s heat dissipation is not stable with varying input signal frequencies and resistor values. Gaining an understanding of the intricate relationship between the


resistors, frequency and resultant heat dissipation can serve as a guiding principle in optimising a circuit, for enhanced efficiency and extended lifespan. By incorporating these findings into the design process, heat dissipation can be managed more effectively.


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