Want a protect circuit

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shalky

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A serial LC resonance circuit need to be protected from big current , so I want to use a current check circuit and decide if the power switch cut off. A few seconds delay time is needed.

Any suggestions and ideas will be helpful.

Regards
 

please be more spesific.
 

Do you mean you need a delayed starter?

You could use a 555 timer and connect it's output to a transistor to power your LC circuit.
 

hmmm what about slow blow fuse? that works too. You need to be more specific as to what your needs are
 

Finally, I use a MCU to process the power switch and make a soft-start circuit to protect. Thanks to everyone helped me !
 

Use an attenuator
 

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