Yea I'm a little confused even after looking a waveform diagrams on google. So a period is one cycle or basically in a duty cycle "on time" plus "off time" (some one please correct me on anything this wrong). So I that's why I had had picked 50% but the. You take the 4 times pulse width I can see how you get the 25% . Still pretty confused. I assume Dylan know the correct answer and with a explanation. If you use my math of the clue from the questions I feel like the the correct answer is B 25% with 12.5 on time. Please Dylan let me know how badly I missed the " easy question".
here is the waveform example I was referencing. I am probably way wrong just trying to tossing out thoughts
http://www.electronics-tutorials.ws/waveforms/tim3.gif?x98918
On a 12v solenoid that is duty cycled and ground side switched, a digital multimeter is used to measure control side voltage. The voltage reading on this circuit read 3 volts. Assuming this solenoid is duty cycled continuously, what is the duty cycle of this solenoid?
A. 75%
B. 33.33%
C. 50%
D. 25%
"Without data, you are just another person with an opinion."
Here goes another probably wrong answer but I would say Answer A. 3volts /12 votls = 25% but because the device is ground side switched and measured with a multi-meter the reading is the off time so you have 75% on time.
Key is current flow the percentage of the time current is flowing --- what proportion of the time the device is powered up.
Ground side switched circuits have to be considered with care. As measuring across the pins of groundside switched circuit will give a different wavefom than measuring between the control wire and chassis ground.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
Knoxtech wrote: Yea I'm a little confused even after looking a waveform diagrams on google. So a period is one cycle or basically in a duty cycle "on time" plus "off time" (some one please correct me on anything this wrong). So I that's why I had had picked 50% but the. You take the 4 times pulse width I can see how you get the 25% . Still pretty confused. I assume Dylan know the correct answer and with a explanation. If you use my math of the clue from the questions I feel like the the correct answer is B 25% with 12.5 on time. Please Dylan let me know how badly I missed the " easy question".
Correct! Don't doubt yourself. Reasoning is good. Thx for answering
This is the the duty cycle output from a Denso alternator signal wire to the PCM.
High load on the alternator pulls the duty cycle down, normal duty cycle at idle is roughly 60% . This is the effect on the duty cycle of turning the heated rear window on.
If the alternator is loaded up using a carbon pile tester the alternator will go full field and the output amps will max out under these conditions the duty cycle will flat line at zero.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
On a 12v solenoid that is duty cycled and ground side switched, a digital multimeter is used to measure control side voltage. The voltage reading on this circuit read 3 volts. Assuming this solenoid is duty cycled continuously, what is the duty cycle of this solenoid?
100% 
