Need a real simple circuit diagram for flowmeter - Electronic Circuits Projects Diagrams Free

perocity · 12th January 2004, 11:47 PM

Can someone please help me with a basic circuit layout for a pretty small flowmeter with a hall sensor. This is really small size project with a 5V power supply. I need to measure rotations with the hall sensor with a digital bar graph readout and a reset switch for the readout. Any help in laying out a circuit design would be awesome!!! or even pointing me in the right direction out there to getting started on this.

Thanks!!!

-Ted

Russlk · 13th January 2004, 01:39 AM

The hall effect device output is a frequency that is proportional to flow rate. The bar graph display requires a DC voltage input, so you need a frequency to voltage converter. Check out LM2917.

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12th January 2004, 11:47 PM	(permalink)
perocity	Need a real simple circuit diagram for flowmeter Can someone please help me with a basic circuit layout for a pretty small flowmeter with a hall sensor. This is really small size project with a 5V power supply. I need to measure rotations with the hall sensor with a digital bar graph readout and a reset switch for the readout. Any help in laying out a circuit design would be awesome!!! or even pointing me in the right direction out there to getting started on this. Thanks!!! -Ted

13th January 2004, 01:39 AM	(permalink)
Russlk	The hall effect device output is a frequency that is proportional to flow rate. The bar graph display requires a DC voltage input, so you need a frequency to voltage converter. Check out LM2917. __________________ see my website: www.geocities.com/russlk