I am having a dilemma where the physical circuit does not match the theoretical.
Problem: I have two input sources, both are Square Waves, Wave 1: 5V Amplitude (5V offset), f = 1.4 Hz, Phase = 0; Duty = 42.8; Wave 2: 5V Amplitude (5V offset), f = 1.4 Hz, Phase = 45; Duty = 42.8. Based on these two signals, that when either input source is a ground, the overall output is a ground and 10V. On the output node, I have a box that detects the input and when a Ground is sensed, a digital logic 1 is triggered. Conversely, when a the box detects an Open (greater than 8V usually, would like 10V) a digital logic 0 is triggered.
Circuit: (link: http://tinyurl.com/yc3aexhj)
I figured the easiest approach would be to effectively make an AND logic gate, that when either source is Ground, that the output is ground. This portion is working just fine.
The issue I am having is at the output node, the output square wave amplitude is not acting as I expect. Here are two snapshots of the output, #1 without phase shift, #2 with phase shift. Green = Input #1, Yellow = Input #2, Blue = Output. Note, that the green and yellow are identical, just shifted green down to see the waves.
Did I have the right circuit design here? Again, theoretically, I have what I need, but practically, I don't.
Problem: I have two input sources, both are Square Waves, Wave 1: 5V Amplitude (5V offset), f = 1.4 Hz, Phase = 0; Duty = 42.8; Wave 2: 5V Amplitude (5V offset), f = 1.4 Hz, Phase = 45; Duty = 42.8. Based on these two signals, that when either input source is a ground, the overall output is a ground and 10V. On the output node, I have a box that detects the input and when a Ground is sensed, a digital logic 1 is triggered. Conversely, when a the box detects an Open (greater than 8V usually, would like 10V) a digital logic 0 is triggered.
Circuit: (link: http://tinyurl.com/yc3aexhj)
I figured the easiest approach would be to effectively make an AND logic gate, that when either source is Ground, that the output is ground. This portion is working just fine.
The issue I am having is at the output node, the output square wave amplitude is not acting as I expect. Here are two snapshots of the output, #1 without phase shift, #2 with phase shift. Green = Input #1, Yellow = Input #2, Blue = Output. Note, that the green and yellow are identical, just shifted green down to see the waves.
Did I have the right circuit design here? Again, theoretically, I have what I need, but practically, I don't.