![transistors - Optocoupler 4N25 cut and saturation for zero crossing detector circuit - Electrical Engineering Stack Exchange transistors - Optocoupler 4N25 cut and saturation for zero crossing detector circuit - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/RwSXQ.png)
transistors - Optocoupler 4N25 cut and saturation for zero crossing detector circuit - Electrical Engineering Stack Exchange
![transistors - Resistors for zero crossing detector with optocoupler - Electrical Engineering Stack Exchange transistors - Resistors for zero crossing detector with optocoupler - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/iZGsW.png)
transistors - Resistors for zero crossing detector with optocoupler - Electrical Engineering Stack Exchange
![a) Zero-crossing detector. (b) Triggering circuit of the bidirectional... | Download Scientific Diagram a) Zero-crossing detector. (b) Triggering circuit of the bidirectional... | Download Scientific Diagram](https://www.researchgate.net/publication/336530711/figure/fig1/AS:813941156483074@1571070102302/a-Zero-crossing-detector-b-Triggering-circuit-of-the-bidirectional-switches-in-this.png)
a) Zero-crossing detector. (b) Triggering circuit of the bidirectional... | Download Scientific Diagram
![transistors - Optocoupler 4N25 cut and saturation for zero crossing detector circuit - Electrical Engineering Stack Exchange transistors - Optocoupler 4N25 cut and saturation for zero crossing detector circuit - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/0Nj9H.jpg)