Hi all,
Looking for a solution to detect 12V on a single wire without splicing directly into the conductor. The wire will typically be running incandescent lamps ranging from about 1~5Amps current draw. I'm only looking to detect a discrete ON/OFF, based on when the lamps are operating or not.
I've considered Hall effect IC sensors, though I'm not sure if the small magnetic field created by the wire would be sufficient for detecting reliably and repeatably.
I've seen some neat looking clipping arrangements in diagnostic tools that read CAN bus twisted pairs:
**broken link removed**
Again I'm not sure if this can be translated to a reliable detection.
Some other requirements:
- Low cost solution
- Reliable, unaffected by EMC or noise from neighbouring wires (Assume the wire will be part of a bundle of wires in a harness)
- Small as possible
- Signal or sense wire can be fed back into an ECU
Any constructive feedback or suggestions welcome.
Thanks
Tom
Looking for a solution to detect 12V on a single wire without splicing directly into the conductor. The wire will typically be running incandescent lamps ranging from about 1~5Amps current draw. I'm only looking to detect a discrete ON/OFF, based on when the lamps are operating or not.
I've considered Hall effect IC sensors, though I'm not sure if the small magnetic field created by the wire would be sufficient for detecting reliably and repeatably.
I've seen some neat looking clipping arrangements in diagnostic tools that read CAN bus twisted pairs:
**broken link removed**
Again I'm not sure if this can be translated to a reliable detection.
Some other requirements:
- Low cost solution
- Reliable, unaffected by EMC or noise from neighbouring wires (Assume the wire will be part of a bundle of wires in a harness)
- Small as possible
- Signal or sense wire can be fed back into an ECU
Any constructive feedback or suggestions welcome.
Thanks
Tom