I apologize if I was not clear enough, I am more of a mechanical guy, than an electronics hardware guy. So my question is, what is the major difference between Totem-Pole and Open Collector that causes them not to be interchangeable, and what do I need to do to get a reading from my OPB973 Open Collector Setup. Some suggested using a pull up resistor (10k) from Vcc to +5V and I tried that with no success. I have found some pages with info, but none on my specific type of sensor. Now when I try with a similar setup, all I get is a 0 output when trying both digital and analog Reads. The site I was ordering from did not have any of the same Totem-Pole sensors in the inverted version (OPB972.) so I ordered the OPB971 and OPB973 Open Collector versions. The problem is I need it to be inverted and give me a 0 when it is unblocked and a 1 when it is. In the HIGH state, Q3 acts as an emitter follower and has an output impedance of about 70. The major advantage of using a totem-pole connection is that it offers low-output impedance in both the HIGH and LOW output states. Sketch a totem-pole output stage and explain its operation and the advantages of incorporating Sketch a totem-pole output stage and explain its operation and the advantages of incorporating this circuit in the TTL circuit. What is the totem-pole output stage What are its advantages 2. The totem-pole arrangement at the output has certain distinct advantages. It gave me a 1 when it was unblocked and a 0 when the flag was in the slot just like it should. What is the totem-pole output stage What are its advantages 2. Sensor: Vcc - 150 Ohm Resistor - +5V (from Arduino)
![totem pole output advantages totem pole output advantages](https://www.icergi.com/wp-content/themes/icergi/images/home/efficiency_vs_gan.png)
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Everything was fine in my setup, I had:Įmitter: Anode - 150 Ohm Resistor - +5V (from Arduino) I was using an Optek OPB970N11 as an optical limit switch on a project.