Hi all, thanks for this great resource and appreciate you taking a look at my problem.
I am trying to design a low profile test tool for work that will detect current flow in a high voltage DC system. Existing COTS solutions won't work as it will need to be ruggedized and miniaturized for final design.
The circuit to be sensed is a capacitor that discharges around 2,300 VDC and a 33 Ohm resistor. Our bench testing has shown current peaking at about 130 Amps before falling off.
I do not need to know actual current amount, just that it is present, so a binary solution (LED on/off) is fine. Thinking ~50A as the threshold but could be lower (a lot lower actually).
The alerting circuit I have envisioned is a simple 3 V battery into an LED and a 43 ohm resistor.
Is a reed relay a possible solution here? I'm not sure if there are any reed relays on the market that would work at these voltage/current levels as I don't really understand what the spec sheets/ratings are saying.
Failing that there is a RR capable of that capacity, would just a small Hall Effect Sensor into an op amp to switch the circuit be the only solution?
Thank you all for your help.
I am trying to design a low profile test tool for work that will detect current flow in a high voltage DC system. Existing COTS solutions won't work as it will need to be ruggedized and miniaturized for final design.
The circuit to be sensed is a capacitor that discharges around 2,300 VDC and a 33 Ohm resistor. Our bench testing has shown current peaking at about 130 Amps before falling off.
I do not need to know actual current amount, just that it is present, so a binary solution (LED on/off) is fine. Thinking ~50A as the threshold but could be lower (a lot lower actually).
The alerting circuit I have envisioned is a simple 3 V battery into an LED and a 43 ohm resistor.
Is a reed relay a possible solution here? I'm not sure if there are any reed relays on the market that would work at these voltage/current levels as I don't really understand what the spec sheets/ratings are saying.
Failing that there is a RR capable of that capacity, would just a small Hall Effect Sensor into an op amp to switch the circuit be the only solution?
Thank you all for your help.