I'm building a device to measure the RPM of a wheel, and I'm using a hall effect sensor and a magnet. I have my sensor hooked up to a 5V supply on the supply pin, ground on the ground pin, and my multimeter on the output pin. I powered up the supply and moved a 1/2" ceramic magnet by the front of the sensor, and saw a very minimal (.01V to .03V) change. I haven't used hall effect sensors before so I'm not quite sure if I'm doing it correctly. Do I need an earth magnet, or perhaps a neodymium? Or does the current through it change and level off so fast that I'm getting a minimal dc voltage change? I'd check but I dont have an Oscope. Any help would be greatly appreciated.
Sad but true.
Data sheets, App notes, App briefs, Eval Board descriptions, any sort of documentation the IC vendor puts out is the best way to learn how a device works.
True, data sheets in particular may be sometimes a little tedious, but hey, this comes with the territory. And they are the only thing that separates you from a miss-applied and non-working circuit.
Ah I see. So since my entire project is being powered by only 5VDC it looks like that limits me to the first two circuits in diagram 4. And here I thought I could just "plug and play" with the hall effect sensor
Ah I see. So since my entire project is being powered by only 5VDC it looks like that limits me to the first two circuits in diagram 4. And here I thought I could just "plug and play" with the hall effect sensor