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Questions and Answers
What does a V-to-I converter do?
What does a V-to-I converter do?
It converts an input voltage into a proportional output current.
In a V-to-I converter, what configuration is the Op-Amp typically in?
In a V-to-I converter, what configuration is the Op-Amp typically in?
Inverting configuration
What is the output current equation for a V-to-I converter?
What is the output current equation for a V-to-I converter?
Iout = Vin / R
A V-to-I converter has low input impedance.
A V-to-I converter has low input impedance.
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Which of the following is an application of a V-to-I converter? (Select all that apply)
Which of the following is an application of a V-to-I converter? (Select all that apply)
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What does an I-to-V converter do?
What does an I-to-V converter do?
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In a current-to-voltage converter, what is the role of the feedback resistor?
In a current-to-voltage converter, what is the role of the feedback resistor?
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What is the output voltage equation for an I-to-V converter?
What is the output voltage equation for an I-to-V converter?
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An I-to-V converter has low sensitivity.
An I-to-V converter has low sensitivity.
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Which application is NOT associated with I-to-V converters? (Select all that apply)
Which application is NOT associated with I-to-V converters? (Select all that apply)
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Match the following converter types with their outputs:
Match the following converter types with their outputs:
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Study Notes
Voltage-to-Current Converter (V-to-I Converter)
- A V-to-I converter transforms an input voltage into a proportional output current.
- The basic circuit uses an op-amp in an inverting configuration, with the input voltage at the inverting terminal and a feedback resistor to control the output current.
- The output current is proportional to the input voltage and flows through the load connected in series with the output.
- The op-amp maintains a virtual ground at the inverting terminal, ensuring the current through the load is directly proportional to the input voltage.
- The output current equation is: Iout = Vin/R, where R is the feedback resistor.
- V-to-I converters offer high input impedance and low output impedance.
- They find applications in driving current-based loads, like LEDs, laser diodes, actuators, and analog signal transmission over long distances using current.
Current-to-Voltage Converter (I-to-V Converter)
- An I-to-V converter converts an input current into a proportional output voltage, commonly used with sensors that output current.
- The basic circuit uses an op-amp in an inverting configuration, with the input current at the inverting terminal and a feedback resistor to convert the current to voltage.
- The op-amp keeps the inverting terminal at a virtual ground, and the input current flows through the feedback resistor, generating a voltage across the resistor.
- The output voltage equation is: Vout = - Iin * Rf, where Rf is the feedback resistor.
- I-to-V converters offer high accuracy, high sensitivity, and low input impedance.
- Applications include photodiode amplifiers, sensing applications with current outputs, and current measurement in electronic systems.
Comparison of V-to-I and I-to-V Converters
- The V-to-I Converter transforms voltage to current, while the I-to-V Converter converts current to voltage.
- Both employ op-amps in inverting configurations, but the V-to-I uses a load resistor, and the I-to-V employs a feedback resistor.
- V-to-I converters are used for driving current-based loads, while I-to-V converters find use in photodiode amplifiers and current sensing.
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Description
This quiz explores the principles of Voltage-to-Current (V-to-I) and Current-to-Voltage (I-to-V) converters. You'll learn about the circuit configurations, their applications, and the equations that define their operation. Test your understanding of these essential components in electronics.
