A sinusoidal voltage source produces the waveform, v t = 1 + cos 2πft. Design a system with v t as its input such that an LED wi
ll light up when f exceeds 50 Hz. The LED has a forward built-in voltage of 2 V. It is okay if the LED flickers when it’s ON, but it should not light up at all when OFF (Hint: use an "ideal" filter along with other components).
1 answer:
Answer:
See explaination
Explanation:
LM358 is the useful IC which works as buffer. It enables circuit to remove overloading effect on each other. Image is in attachment.
We can define a light-emitting diode (LED) as a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons
See attached file for detailed solution of the given problem.
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Answer:
Calculate the individual residential lifetime cancer risk.
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C =
t = d / v
t = 150 miles / 2 mile per hrs.
t = 75 hrs
t = 75/24
t = 3.13 days
Substitute the obtained value in (2).
C =
C = 0.72 x e^(-0.1*3.13)
C = 0.72 x 0.7313
C = 0.526 mg/L
Substitute the obtained value in (1).
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Risk = 0.30kg.d/mg x 0.526mg/L x 2L/d x 350day/365days
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Answer:
The initial temperature will be "385.1°K" as well as final will be "128.3°K".
Explanation:
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Helium's initial volume, v₁ = 6 m³
Mass, m = 1.5 kg
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On putting the estimated values, we get
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Now,
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and,
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