Variable Inverter: Can Output Depend on Digital Resistor?

• ThatNinthGuy
In summary, Simon is interested in making an inverter with the output controlled by a digital resistor. NinthGuy welcomes Simon to Physics Forums and suggests using Programmable Gain Amplifiers from Linear Technology, which allow for easy control of gain through a serial or parallel interface. Bobby asks for the reason behind wanting a digital resistor in the inverter.
ThatNinthGuy
Hi

Would it be possible to make an inverter, with the output dependant on a digital resistor?

Simon

Define output.

ThatNinthGuy, Welcome to Physics Forums!

Here is one manufacturer of Integrated Circuits that makes inverting amplifiers with digital gain control:

Programmable Gain Amplifiers

Set your gain with a simple serial or parallel interface from 1 to over 4000V/V. Linear Technology's PGAs (programmable gain amplifiers) provide excellent gain accuracy, channel-to-channel matching specs, and low 1ppm/°C drift.

For circuit ideas drawn from our vast library of datasheets, design notes and application notes, visit our new op amp circuit collection

http://www.linear.com/products/programmable_gain_amplifiers

Cheers,
Bobbywhy

1. What is a variable inverter?

A variable inverter is an electronic device that is used to convert a digital input signal into an inverted digital output signal. This means that when the input signal is high (1), the output signal will be low (0), and vice versa.

2. How does a variable inverter work?

A variable inverter works by using a digital resistor to control the output voltage. The digital resistor is essentially a network of transistors that can be switched on and off to vary the resistance. This, in turn, affects the voltage output of the inverter.

3. Can the output of a variable inverter depend on the digital resistor?

Yes, the output of a variable inverter can depend on the digital resistor. By varying the resistance of the digital resistor, the output voltage of the inverter can be adjusted. This allows for a range of output voltages to be produced.

4. What is the purpose of using a digital resistor in a variable inverter?

The purpose of using a digital resistor in a variable inverter is to provide flexibility in the output voltage. By adjusting the resistance of the digital resistor, the output voltage can be fine-tuned to meet specific requirements.

5. In what applications is a variable inverter commonly used?

Variable inverters are commonly used in applications where the output voltage needs to be controlled, such as in power supplies, motor control circuits, and audio amplifiers. They are also used in digital logic circuits to convert signals between different voltage levels.

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