- #1
dgeccles
- 4
- 0
Hello,
I have two devices, one that emits a 5V DO and another that receives a 24V DI. I wanting to interface them but am having problems.
I was searching for a small solid state device that could easily interface them but could not find any. So I have been trying to creat a circuit using a transistor that will do the job.
Is there an easier way to do it with a small component that can fit on a circuit board?
I have managed to design a signal that outputs 5VDC to 24VDC with an input of 5VDC to 0VDC respectively. While this is enough difference to act as the digital signal between the two I would rather drop the outputs minimum voltage to be 0VDC.
I am using the NPN transistor BD681. The Base is connected to directly to the 0-5VDC input signal. The Collector is connected to the 24VDC supply through a 100k Ohm resistor AND to the OUT signal. The Emitter is connected to Gnd via a 330 Ohm resister.
Can anyone help me improve this design?
Thanks guys,
David
I have two devices, one that emits a 5V DO and another that receives a 24V DI. I wanting to interface them but am having problems.
I was searching for a small solid state device that could easily interface them but could not find any. So I have been trying to creat a circuit using a transistor that will do the job.
Is there an easier way to do it with a small component that can fit on a circuit board?
I have managed to design a signal that outputs 5VDC to 24VDC with an input of 5VDC to 0VDC respectively. While this is enough difference to act as the digital signal between the two I would rather drop the outputs minimum voltage to be 0VDC.
I am using the NPN transistor BD681. The Base is connected to directly to the 0-5VDC input signal. The Collector is connected to the 24VDC supply through a 100k Ohm resistor AND to the OUT signal. The Emitter is connected to Gnd via a 330 Ohm resister.
Can anyone help me improve this design?
Thanks guys,
David