All Questions
Tagged with 24v opto-isolator
8 questions
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24V I/O (PLC) to 3.3V interface with opto and PCF8574
I am more of a software guy, and I want to make sure my design works before sending it off to fabrication.
I need to interface with 24V PLC I/Os. I want a simple design for now, as I can add ...
1
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0
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339
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Will this 24 V relay driver work?
I am not sure about the 24 V which drives the transistor base. Is this circuit correct? Do I need some modifications?
The current rating for D2 is 200 mA. Is that high enough?
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2
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680
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Can I change the voltage (12V) input into my optocoupler to 24 V?
simulate this circuit – Schematic created using CircuitLab
I have an inductive sensor (LJ18A3-8-Z/BX,) normally open 6V to 36V 300mA. It is connected to a 12V 80kHz single channel opto-coupler. ...
- 3
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1
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Read 24 Vac signal with a Raspberry Pi
I want to read a 24 Vac signal coming from my old automatic gate with my Raspberry Pi. The signal tells me if the gate is OPEN->24 Vac or CLOSED->0 Vac. Raspberry Pi input are 3.3 Vdc tollerant. ...
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1
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535
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Interface 24V signal from one device to 3.3V signal on another device
I have a device A that sends a signal through an optocoupler, this signal travels through a 7m cable and is used by another device B that has a SN74LVC1G17SingleSchmitt-TriggerBuffer powered by 3.3V, ...
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2
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4k
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24V signal switching optccoupler
We have a robot, and it has 32 digital output, fed into a homemade PCB.
On the PCB we have optocouplers, which have a forward voltage around 1.2-1.3V.
So I need to drop the voltage a lot. That's why ...
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0
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1
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Arduino 24VDC motor speed control
I have designed a circuit with some resources from this website and I attached it here. I have given circuit connection in a breadboard and successfully run and control the speed of the motor. After a ...
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5
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24V to optocoupler (voltage drop of 22.8V)
I have to detect a signal of 24V. The length of the signal is 1 second. So I use an optocoupler. The led inside the optocoupler must receive 1.2V.
First I use a resistor (4k7) but the resistor heat ...
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