(I've asked this on Chat but it doesn't seem to get me anywhere)
I have a fast pulse circuit which actuates a diesel fuel injection system. We built the circuit ourselves and it works well. It activates a small coil in the injector to lift a small plate. The plate is magnetic.
I am not an electronics expert - quite the opposite.
But I want to know more - what the circuit is really doing, compared to what we designed it to do.
Question 1
Supply at 15 v. Large current available but (of course) the current is determined by the injectors impedance, which we know. So if I connect a side line from +ve to the Channel 1 and also connect same to the Ext Trigger, I get a picture of build-up & decay of voltage vs time. True?
Question 2:
How do I see what current build-up and decay is? I can't believe I just attach the +ve to Channel 2 via known resistor, and use Ohms Law.
I am also interested in how much reverse voltage I get when the pulse ends and the field collapses, but that's in Q1, I think.
Thank you!
I have just read the link to Oscilloscopes but current isn't mentioned. Is it possible that the current is a perfect reflection of the voltage picture? (I imagined that with the events at switch off, collapsing field etc, induced voltage would oppose the flowing current).
In any case, if I observe change on the screen in Channel 2, with a known resistor in the circuit, would that be pictorially similar to the channel 1 voltage?
I have a fast pulse circuit which actuates a diesel fuel injection system. We built the circuit ourselves and it works well. It activates a small coil in the injector to lift a small plate. The plate is magnetic.
I am not an electronics expert - quite the opposite.
But I want to know more - what the circuit is really doing, compared to what we designed it to do.
Question 1
Supply at 15 v. Large current available but (of course) the current is determined by the injectors impedance, which we know. So if I connect a side line from +ve to the Channel 1 and also connect same to the Ext Trigger, I get a picture of build-up & decay of voltage vs time. True?
Question 2:
How do I see what current build-up and decay is? I can't believe I just attach the +ve to Channel 2 via known resistor, and use Ohms Law.
I am also interested in how much reverse voltage I get when the pulse ends and the field collapses, but that's in Q1, I think.
Thank you!
I have just read the link to Oscilloscopes but current isn't mentioned. Is it possible that the current is a perfect reflection of the voltage picture? (I imagined that with the events at switch off, collapsing field etc, induced voltage would oppose the flowing current).
In any case, if I observe change on the screen in Channel 2, with a known resistor in the circuit, would that be pictorially similar to the channel 1 voltage?
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