Re: 7000-series power-hungry plug-ins

Chuck Harris
 

If you have ever used a 7805, or LM309, LM319, or LM340, ... you
have already used current foldback.

-Chuck Harris

tinkera123 wrote:

Okay, understand that now. I have played with/built many linear supplies, but none with much protection circuitry.
Thank you, Chuck.
Cheers,
Ian

In regulated supplies, there are often over current protection
circuits that are used in lieu of fuses. These circuits reduce
the voltage from the power supply in an attempt to reduce the
current, and the power dissipation, to something that the supply
can safely survive. This is called current foldback.

The Tektronix power supplies for the most part all have this
capability.

-Chuck Harris

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