Transistor that conducts when 0v is present??? or something similar

[c33fax]

Hi, hello and good evening....

My first post.

I've built a low voltage cut off circuit that seems to work well, and I want add a simple flashing led circuit that activates once cut off has accurred.

I was thinking is there a Transistor that will conduct if 0v is present.

Can anyone help?

Thank you.

 

[KeepItSimpleStupid]

A JFET like the J174 will conduct when V is below Vgs, which is 5-10 volts for that particular device.

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[c33fax]

Thanks... looking it up.