Do Transistors That Divide Voltage Exist?

In summary: This is known as the transistor's gain. This gain is defined as the output current divided by the input current (Ic/Ib). In summary, transistors can be considered analog devices that amplify an input signal using a base voltage, and their gain is defined as the output current divided by the input current.
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FortranMan
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So I know a transistor is built to amplify or multiple an input signal using a base voltage. Are there such transistors that are analog? That is the output voltage is amplified depending on the base voltage? If so, is there analogously a transistor that divides instead of multiplies? That is where the base voltage is in the denominator and reduces the output voltage if the base voltage is increased? Basically I am looking for a transistor that can perform the analog computation analogy of mathematical division.
 
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FortranMan said:
So I know a transistor is built to amplify or multiple an input signal using a base voltage. Are there such transistors that are analog? That is the output voltage is amplified depending on the base voltage? If so, is there analogously a transistor that divides instead of multiplies? That is where the base voltage is in the denominator and reduces the output voltage if the base voltage is increased? Basically I am looking for a transistor that can perform the analog computation analogy of mathematical division.

Read this June 1958 Radio-Electronics article, "Mr. Math Analog Computer".
 
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FortranMan said:
So I know a transistor is built to amplify or multiple an input signal using a base voltage. Are there such transistors that are analog? That is the output voltage is amplified depending on the base voltage?

you also need to do some reading up on how a transistor actually works :smile:
their neither amplify nor multiply and transistors are analog :wink:

Very basically, their operation gives the "appearance" of amplification. That is the input current between the base and emitter (NPN Transistor) is not amplified, rather, it is used to control a larger current flow between the collector and emitter

 
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Related to Do Transistors That Divide Voltage Exist?

1. What is an analog voltage divider?

An analog voltage divider is an electrical circuit that divides a voltage into smaller, proportional voltages. It consists of two resistors connected in series, and the output voltage is determined by the ratio of the resistances.

2. How does an analog voltage divider work?

An analog voltage divider works by using the principle of voltage division, where the total voltage across a series circuit is divided between the resistors based on their individual resistance values. The output voltage is calculated using the formula Vout = Vin * (R2 / (R1 + R2)), where Vin is the input voltage and R1 and R2 are the resistances of the two resistors in the divider.

3. What are the applications of an analog voltage divider?

An analog voltage divider is commonly used in electronic circuits to provide a reference voltage, to scale down high voltages for measurement, and to control the brightness of LEDs. It is also used in sensors and control systems to convert physical quantities, such as temperature or pressure, into voltage signals.

4. How do you choose the resistors for an analog voltage divider?

The resistors used in an analog voltage divider should have values that are significantly different from each other, but not too large or too small. A good rule of thumb is to choose resistors that have a ratio of 10:1 or higher. Additionally, the resistors should be matched in terms of tolerance and temperature coefficient to ensure accuracy and stability of the output voltage.

5. What are the advantages of using an analog voltage divider?

Analog voltage dividers are simple, inexpensive, and easy to implement in electronic circuits. They can provide a wide range of output voltages and are suitable for low-power applications. Moreover, they do not require any external power source and can be used as stand-alone components or as part of a larger circuit.

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