With respect to the following 555 timer circuit what will be the value of RA and R such that the LED turns on for a duration of 10 ms every time it receives negative trigger pulse. LED operating current = 20 mA, Vf = 1.4 V, Vo on = 13.4 V and C = 0.22 nf-A-41.4 KΩ, 600 ΩB-45 KΩ, 630 ΩC-43.5 KΩ, 580 ΩD-44.9 KΩ, 600 Ω-A-41.4 KΩ, 600 Ω

Question

With respect to the following 555 timer circuit what will be the value of RA and R such that the LED turns on for a duration of 10 ms every time it receives negative trigger pulse. LED operating current = 20 mA, Vf = 1.4 V, Vo on = 13.4 V and C = 0.22 nf-A-41.4 K&Omega;, 600 &Omega;B-45 K&Omega;, 630 &Omega;C-43.5 K&Omega;, 580 &Omega;D-44.9 K&Omega;, 600 &Omega;-A-41.4 K&Omega;, 600 &Omega;

APTITUDE CRACK · Accepted Answer

A 41.4 K&Omega;, 600 &Omega;  Timer operated in mono, mode RAC = ∴ RA = 41.4 KΩ R = = 600 Ω.

Exam Questions Papers

With respect to the following 555 timer circuit what will be the value of R_A and R such that the LED turns on for a duration of 10 ms every time it receives negative trigger pulse. LED operating current = 20 mA, V_f = 1.4 V, Vo _on = 13.4 V and C = 0.22 nf

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Exam Questions Papers

With respect to the following 555 timer circuit what will be the value of RA and R such that the LED turns on for a duration of 10 ms every time it receives negative trigger pulse. LED operating current = 20 mA, Vf = 1.4 V, Vo on = 13.4 V and C = 0.22 nf

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For help Students Orientation Mcqs Questions

With respect to the following 555 timer circuit what will be the value of R_A and R such that the LED turns on for a duration of 10 ms every time it receives negative trigger pulse. LED operating current = 20 mA, V_f = 1.4 V, Vo _on = 13.4 V and C = 0.22 nf

For help Students Orientation
Mcqs Questions