| keantoken |
I can't comprehend there not being another discussion on this, but I searched and found nothing. So here we go.
What are the benefits of using an LED in a CCS, besides that it looks cool?
- keantoken |
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| Christer |
| Low noise and often an appropriate voltage drop in a single component. |
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| AndrewT |
and the LED voltage stays near constant with small changes in current and temperature.
And it's cheap (red). |
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| keantoken |
| Will a high-intensity LED work better? |
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| AndrewT |
test it,
But, I doubt you'll find much, if any, improvement with any other than the cheap red LEDs.
search for the LED tests that are posted on the Forum. |
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| SY |
| kt, besides Christer's most interesting work, the use of LEDs as CCS references and for cathode biasing is discussed in great detail in Morgan Jones's "Valve Amplifiers," 3rd ed. For a CCS, there are quite a few ways to do the reference, but the LED (besides being stable and low noise) does provide a nice visual indicator for troubleshooting. |
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