The RC circuit in Fig. 7.74 is designed to operate an alarm which activates when the curre...
The RC circuit in Fig. 7.74 is designed to operate an alarm which activates when the current through it exceeds 120 μA. If 0 ≤ R ≤ 6 kΩ, find the range of the time delay that the variable resistor can create.
Answer: Between 47.23 ms and 124 ms.
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