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…

Daniel Sinclair
- 11
- 2
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…

hazelsystem
- 1
- 1
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.

Manjitha Teshara
- 103
- 3