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3 years ago

Determine the resistance values for a voltage divider that must meet the following specifications:_______.

Engineering

1 answer:

Nikolay [14]3 years ago

8 0

Answer:

i) when circuit is unloaded : R1 + R2 = 2kΩ.

ii) when 5V output voltage is applied : R1 = 1 kΩ , R2 = 1 kΩ

iii) when 2.5 v output voltage is applied : R1 = 1500 Ω, R2 = 500 Ω

iv) when: R1 = 1 kΩ , R2 = 1 kΩ is connected in parallel output voltage < 5 V

When : R1 = 1500 Ω, R2 = 500 Ω is connected in parallel output voltage > 2.5V

Explanation:

Current drawn from source under loaded condition ≤ 5 mA

source voltage = 10 v , required output = 5 v , 2.5 v

attached below is the sketch of the circuit

Resistance values

<em>i) when the circuit is unloaded </em>

Req = R1 + R2 = 2 kΩ ( Req = Vs / I = 10 / 5*10^-3 = 2 kΩ )

<em>ii) when output voltage = 5 v</em>

we will apply voltage divider rule

R1 = 1 kΩ ,

R2 = 1 kΩ

<em>iii) When the output voltage = 2.5 v </em>

applying voltage divider rule

R1 = 1500 Ω

R2 = 500 Ω

iv) when the load is connected to each tap one at a time

i.e. when the resistance are in parallel

when: R1 = 1 kΩ , R2 = 1 kΩ is connected in parallel output voltage < 5 V

When : R1 = 1500 Ω, R2 = 500 Ω is connected in parallel output voltage > 2.5V

attached below is the detailed solution to the given problem

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