What is the Optimal Current Source for Extremely Low Current Applications?

In summary, a precision current source is a highly stable and accurate electronic circuit that provides a precise output current for scientific and industrial applications. It works by constantly monitoring and adjusting the output current using a feedback loop, making it more accurate and stable compared to regular current sources. The main advantages of using a precision current source are its stability and precise control of current, making it useful for testing, calibration, and other specialized applications in various industries.
  • #1
lennybogzy
94
0
an application I'm working on requires 1.35 yoctoamps with a tolerance of + or - 0.10yoctoamps.

Any current-source reccomendations?
 
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  • #2
lennybogzy said:
an application I'm working on requires 1.35 yoctoamps with a tolerance of + or - 0.10yoctoamps.

Keithly's sourcemeters go down to femtoamperes (one retailer sells them for 13000$)... What kind of application requires yoctoamperes, if I may ask? If such a source exists, you're probably going to have to pay megadollars to get one. Good luck.
 
  • #3
By the way:

1A = 1C/s = 6.24*1018 electrons per second.

You're asking for a source that sources 10-24 amperes, or about an electron every other day?
 

Related to What is the Optimal Current Source for Extremely Low Current Applications?

1. What is a precision current source?

A precision current source is a type of electronic circuit that is designed to provide a highly stable and accurate output current, typically in the range of microamps to milliamps. It is used in scientific and industrial applications where precise control of current is necessary, such as in testing and calibration of electronic components.

2. How does a precision current source work?

A precision current source is typically based on a feedback loop, where the output current is constantly monitored and compared to a reference value. Any variations in the output current are corrected by adjusting the input voltage to the circuit. This allows for a very precise and stable output current, even in the presence of external factors such as temperature changes.

3. What are the advantages of using a precision current source?

The main advantage of using a precision current source is its ability to provide a stable and accurate output current, which is essential in many scientific and industrial applications. It also allows for precise control and adjustment of the current, making it a versatile tool for testing and calibration purposes.

4. How is a precision current source different from a regular current source?

A regular current source may provide a stable output current, but it may not be as accurate or precise as a precision current source. A precision current source uses more advanced circuitry and feedback mechanisms to ensure a highly stable and accurate output current, even in the presence of external factors.

5. What are some common uses for a precision current source?

A precision current source is commonly used in scientific research, testing and calibration of electronic components, and in industrial applications such as manufacturing and quality control. It is also used in specialized equipment such as medical devices and analytical instruments, where precise control of current is necessary for accurate measurements.

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