I remember that some time ago, I used a current sensing relay (something like this one https://www.supplyhouse.com/Aprilai...MIoLy-4pyo2gIVC49pCh3BlAoIEAQYASABEgJXJvD_BwE
) to connect a humidifier on a home furnace only when the blower motor was operating. The device was a non-contact relay that would operate when the blower motor was on. It worked fine.
I am wondering if I can use the same idea for a different project. What I would like to do is have a device that will turn on when a similar blower motor is running (and without directly making an electrical connection to the device).
So, for example, can I clip this device https://www.amazon.com/dp/B075541WV...olid=2SOSZ9TS640JF&psc=0&ref_=lv_ov_lig_dp_it around the AC wires to the blower motor and get, as an output, an AC signal that can be rectified and regulated to power a small embedded controller? What about if the AC wires to the blower motor have shielding? What does the 100A/50mA figure for the device mean?
Alternatively, but not preferred, would be to use the transformer to generate a signal that would be used (wake up or transistor switch) to power up the embedded controller device (which would be operated by a battery for example).
I know very little about these AC Current Sensor Transformer devices. Is this feasible and if so, how can I estimate how much current I can get out? In the original case, there was enough to operate a relay which suggests that 10-15 mA is not unreasonable.
Any beginner-level advice?
) to connect a humidifier on a home furnace only when the blower motor was operating. The device was a non-contact relay that would operate when the blower motor was on. It worked fine.
I am wondering if I can use the same idea for a different project. What I would like to do is have a device that will turn on when a similar blower motor is running (and without directly making an electrical connection to the device).
So, for example, can I clip this device https://www.amazon.com/dp/B075541WV...olid=2SOSZ9TS640JF&psc=0&ref_=lv_ov_lig_dp_it around the AC wires to the blower motor and get, as an output, an AC signal that can be rectified and regulated to power a small embedded controller? What about if the AC wires to the blower motor have shielding? What does the 100A/50mA figure for the device mean?
Alternatively, but not preferred, would be to use the transformer to generate a signal that would be used (wake up or transistor switch) to power up the embedded controller device (which would be operated by a battery for example).
I know very little about these AC Current Sensor Transformer devices. Is this feasible and if so, how can I estimate how much current I can get out? In the original case, there was enough to operate a relay which suggests that 10-15 mA is not unreasonable.
Any beginner-level advice?