Questions tagged [barrier]

5 questions
2
votes
1 answer

Circuit topology name and function for PNP transistor in light barrier circuit

I have seen this rather simple circuit for end position detection of a DC motor drive mechanism. An infrared LED (V402) and a phototransistor (V401) are used as a light barrier. Can someone give me a hint concerning the circuit topology name and…
Stefan Wyss
  • 6,471
  • 1
  • 11
  • 22
1
vote
1 answer

SS34 in-line Schottky alternative

Is there an inline alternative to this part I can replace it with? With my limited electronics knowledge and the ability to google I know this is a surface mount diode rectifier but that’s about as much as I understand. For some reason the…
0
votes
0 answers

How to house a relay module and barrier strip?

I’m working on a project where I need to direct 120 Vac with a barrier strip and relay module. I work in a wet chemistry lab and would like advice on buying a housing to protect myself and the circuit when plugged in. I have attached photos of both…
0
votes
1 answer

Why does the Schottky barrier height remain constant?

If a metal and a semiconductor are connected, they are going to equilibrium. For this, the Fermi level has to be equal. So far I understood that this causes a charge exchange till said equilibrium has been reached. As a result, the band edges in the…
Tobias
  • 71
  • 7
0
votes
1 answer

Barrier voltage and knee voltage are give same meaning?

Is there any difference between barrier voltage and knee voltage? Could somebody please let me know, if any.