LED indication problem

yviswanathbe · Dec 23, 2012

Hi,

I need a circuit of LED indication.

My Voltage source(Battery) is 10 to 160Vdc. When ever the source is connected i need to show a LED for indication.

Can any body suggest me any idea.

Thanks and Regards,
Viswanath

Tahmid · Dec 23, 2012

You can use something similar to this:

Remember to take into consideration the power loss in the resistor and in the transistor.

Hope this helps.
Tahmid.

yviswanathbe · Dec 24, 2012

Hi Tahmid,

Thanks for sharing the circuit.

I have done in a different way.But my circuit needs auxiliary power supply. When i try to derive it from the battery, the circuit draws more current. that shouldn't happen in my case.

View attachment Battewry Indication.bmp

Your circuit seems to be working perfect. I tried in simulation.

Thanks again for the circuit.

Regards,
Viswanath

LED indication problem

yviswanathbe

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Tahmid

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yviswanathbe

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