erniehatt
New Member
Hi,
I am new here, and just a hobbyist in Electronics.
I have an electronis Camera Triggering unit, and am trying to to put together a multi-laser device, the laser side is working fine, I am having a problem with the photo transistor side. I have been thinking along the lines of an AND GATE, which if I am reading the truth tables correctly, should, trigger the camera unit, when either of the inputs go low,i.e the beam is broken. If so how do I connect this, do I need pull up or pull down resistors.
If I am wrong in my assumptions then what to I need to make it work.
The image shows how I would connect a single transistor. Ernie
I am new here, and just a hobbyist in Electronics.
I have an electronis Camera Triggering unit, and am trying to to put together a multi-laser device, the laser side is working fine, I am having a problem with the photo transistor side. I have been thinking along the lines of an AND GATE, which if I am reading the truth tables correctly, should, trigger the camera unit, when either of the inputs go low,i.e the beam is broken. If so how do I connect this, do I need pull up or pull down resistors.
If I am wrong in my assumptions then what to I need to make it work.
The image shows how I would connect a single transistor. Ernie