About the anemometer circuit

[Deleted]

Regarding this:

www3.telus.net/chemelec/Projects/Anemometer/Schematic.png

I'm Mark from the Philippines and I can't find a:

resistor 1 = 12.1

resistor = 21.5k

resistor = 13k

npn transistor = 2N3904

op-amp = LT1013

resistor 2 = 309k

resistor 3 = 84.5k

Can anyone help about those materials? Is it really correct? If yes, is there any right substitute for those materials?

And about this project what will be it's final output? does the 2 npn transistor should be outside?

Any response will be appreciated, thanks.

[Gary Lecomte]

These parts are faily Standard in North America.
These Resistors are all 1% Values.

Probably all these parts are Available from Digikey.
But may be Quite Expensive for you to get them to the Philippines.

Both Transistors MUST be Outside the box to detect the wind.

Besides this is ONLY good for VERY LOW Wind Speeds!

[Deleted]

Thank you.

Another question, how would I know it's reading? is it digital or analog? Do I still need multitester or voltmeter to get the reading?

[Gary Lecomte]

Mar 14, 2009 3:53:19 GMT -8 @goodguy777 said:

Thank you.

Another question, how would I know it's reading? is it digital or analog? Do I still need multitester or voltmeter to get the reading?

Yes, You need a Meter, Either Analogue or Digital is Ok.
But Analogue is a Bit Better.

Gary