NerdyGirlyGirl
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How to view 12V automotive relay voltage transient with an Oscilloscope
I have a 5 pin 12V 30amp automotive relay and need to capture the transient voltages created when the magnetic field collapses in the coil. How do I make the connections with the oscilloscope to be able to capture these voltage spikes?
I connected my scope to pins 86 and 85 and can see the voltage and drops from the power supply but not the transient spikes across the coil.
The assignment is capture the voltage transients with the scope both with a suppressor circuit and without - just a high switching diode on the coil in reverse bias pins 86 and 85 and then adding a Zener Diode in series with the switching diode across the coil.
Thanks.....
I have a 5 pin 12V 30amp automotive relay and need to capture the transient voltages created when the magnetic field collapses in the coil. How do I make the connections with the oscilloscope to be able to capture these voltage spikes?
I connected my scope to pins 86 and 85 and can see the voltage and drops from the power supply but not the transient spikes across the coil.
The assignment is capture the voltage transients with the scope both with a suppressor circuit and without - just a high switching diode on the coil in reverse bias pins 86 and 85 and then adding a Zener Diode in series with the switching diode across the coil.
Thanks.....
