Thanks for some design ideas to prime my head on this. I've forgotten everything I learned years ago.
No archive search satisfaction. Help an old rescue dog...
The hobby-design problem:
In general, the design needs to flip or flop a differential output pair when the current goes one direction or the other.
When perfected, the direction-detector output will drive a half-bridge that creates current directionally through a shunt.
The application is as half-bridged-shunts with current-direction-sense that triggers along the sequence in a daisy-chain of reversing shunted-conductors. That's later.
If the power sourcing current shares a neutral/ground with the logic power supply, what kinds of minimal ways could a flip-flop toggle when shunt-current reverses? General terms are great. I'll draw it out to understand it better if my head holds together.
The direction-detection output needs to toggle on negative and/or positive voltage drops across the shunt.
I assume a Zener diode(s) could be chosen in a windowing-comparator with an op-amp, but something simple with a 'negative part count' would be right down my alley (old hacker tricks are cool, and air-wire circuit-sculpture is likely for starts). The vague design in my head stops about here.
The social interaction is a positive on hopes of ramping the learning curve with gecko feet (sticking to it). Thanks for helping Grandpa!
No archive search satisfaction. Help an old rescue dog...
The hobby-design problem:
In general, the design needs to flip or flop a differential output pair when the current goes one direction or the other.
When perfected, the direction-detector output will drive a half-bridge that creates current directionally through a shunt.
The application is as half-bridged-shunts with current-direction-sense that triggers along the sequence in a daisy-chain of reversing shunted-conductors. That's later.
If the power sourcing current shares a neutral/ground with the logic power supply, what kinds of minimal ways could a flip-flop toggle when shunt-current reverses? General terms are great. I'll draw it out to understand it better if my head holds together.
The direction-detection output needs to toggle on negative and/or positive voltage drops across the shunt.
I assume a Zener diode(s) could be chosen in a windowing-comparator with an op-amp, but something simple with a 'negative part count' would be right down my alley (old hacker tricks are cool, and air-wire circuit-sculpture is likely for starts). The vague design in my head stops about here.
The social interaction is a positive on hopes of ramping the learning curve with gecko feet (sticking to it). Thanks for helping Grandpa!