Hello AAC peeps,
In the attached circuit (part picture grab) I am using a Toshiba Optocoupler 4 pin device, not 6 pin as shown (TinyCad doesn't have the 4-pin symbol in its library).
My circuit uses the Arduino Uno and when pin 10 goes high (logic +5V), T5 conducts, turning on the opto. This base current then in turn allows current to flow throught the Collector / Emitter and thus triggers a 3rd party device.
This does work, however; for stability and good electronic design would it be prudent to connect pin 4 of the Opto to the circuit's ground OR is that not really necessary. After all, the whole purpose of an Optocoupler is to isolate one circuit from another.
Comments appreciated and thank you.
In the attached circuit (part picture grab) I am using a Toshiba Optocoupler 4 pin device, not 6 pin as shown (TinyCad doesn't have the 4-pin symbol in its library).
My circuit uses the Arduino Uno and when pin 10 goes high (logic +5V), T5 conducts, turning on the opto. This base current then in turn allows current to flow throught the Collector / Emitter and thus triggers a 3rd party device.
This does work, however; for stability and good electronic design would it be prudent to connect pin 4 of the Opto to the circuit's ground OR is that not really necessary. After all, the whole purpose of an Optocoupler is to isolate one circuit from another.
Comments appreciated and thank you.
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