Can pulse generators output 100mA?

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Discussion Overview

The discussion revolves around the output current capabilities of pulse generators, particularly in the context of a 5V pulse with a 50-ohm output impedance. Participants explore how these factors influence the expected current output, especially when connected to different loads.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions the current output of a pulse generator, noting the lack of information in the datasheets regarding its capabilities.
  • Another participant suggests that the output current depends on the specific pulse generator being used and indicates that a 5V pulse with a 50-ohm output impedance could theoretically output 100mA if the load is 1 ohm, provided the pulse duration is not too short.
  • A request for the manufacturer and model number of the pulse generator is made, indicating that specifics may vary by device.
  • One participant emphasizes the necessity of a datasheet to accurately determine the output characteristics and suggests measuring the open circuit pulse amplitude to assess the output impedance.
  • It is mentioned that if the generator has a 50-ohm output impedance, the voltage would drop to half when a 50-ohm load is applied, which would affect the current output.

Areas of Agreement / Disagreement

Participants generally agree that the output current is contingent on the specific pulse generator and its settings, but there is no consensus on the exact current output without further information from the datasheet or measurements.

Contextual Notes

Limitations include the lack of specific details about the pulse generator in question, such as the manufacturer and model, which are crucial for determining its output characteristics. Additionally, the discussion does not resolve the assumptions regarding the pulse duration and its impact on the output current.

Bakez
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If I have a pulse generator what is the current it can output? It doesn't say in the datasheets

IF I have a 5V pulse and 50ohm output impedence am I supposed to believe it outputs 100mA?

And then if my load is 1ohm I should get something near 100mA through it?
 
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If I have a pulse generator what is the current it can output? It doesn't say in the datasheets
That depends on your pulse generator.

IF I have a 5V pulse and 50ohm output impedence am I supposed to believe it outputs 100mA?

And then if my load is 1ohm I should get something near 100mA through it?
If the pulse is not too short, I would expect this to work.
 
Who is the manufacturer and what is the model number of your pulse generator ?
 
100ns pulse
 
Nobody can answer that question without a data sheet. If this is an instrument, then it may have a 50 ohm output impedance, so analyze as if there were a 50 ohm resistor in series. Or it may have settings for the output impedance, or a low impedance mode. I expect 50 ohms.

To test it, measure the open circuit pulse amplitude, then apply a 50 ohm load. The change in voltage will tell you the output impedance. It will go to 1/2 the voltage if it is a 50 ohm generator.
 

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