Question,
When checking the 5v reference and ground on a Hall effect sensor,
Taking a test light from battery + to sensor ground the light is fairly bright . But when taking the test light from battery– to the 5v reference the bulb isn’t as bright.
Is there a reason for this?
Many thanks
Rupert S
Edit: I’ve just realised I’m putting 5v through the test light when checking the ref and 12v when checking the ground!
When measuring between B+ and sensor ground the voltage/difference in potential is full system voltage (12V) with the engine off.
The voltage/ difference in potential between sensor reference voltage and B- is only 5V. The lower voltage available makes the testlight shine dimmer in this case.
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