Hello,
This is my first post so please be gentle with me!! I'm an electrical, instrumentation and plc engineer. I'm building a 4-20mA signal generator, I have all the circuit for the generator itself all sorted however I would like to have a display on it as well to show the current reading, ideally three 7 segment displays to show for example 14.7 (mA). Is there a chip or anything I can buy which will produce either a BCD signal or a mA to voltage conveter (which I can then convert to BCD)? I'm looking for cost effective as well so a simple chip would be ideal rather than a PIC as although the chip isn't too expensive I will need a programming board to program it I believe which is extra expense. Any help would be greatfully received as said above I'm not an electronics expert although have done quite a bit of electronics in the past but that was over 10 years ago now! I am also going to add a 0-30v and 0-10v analogue signal to this as well and a reading for a resistance based temperature sensor shortly as well once I have got the 4-20mA part all up and running.
This is my first post so please be gentle with me!! I'm an electrical, instrumentation and plc engineer. I'm building a 4-20mA signal generator, I have all the circuit for the generator itself all sorted however I would like to have a display on it as well to show the current reading, ideally three 7 segment displays to show for example 14.7 (mA). Is there a chip or anything I can buy which will produce either a BCD signal or a mA to voltage conveter (which I can then convert to BCD)? I'm looking for cost effective as well so a simple chip would be ideal rather than a PIC as although the chip isn't too expensive I will need a programming board to program it I believe which is extra expense. Any help would be greatfully received as said above I'm not an electronics expert although have done quite a bit of electronics in the past but that was over 10 years ago now! I am also going to add a 0-30v and 0-10v analogue signal to this as well and a reading for a resistance based temperature sensor shortly as well once I have got the 4-20mA part all up and running.