- Tue Sep 15, 2015 9:11 am
#184706
I'v replaced many transistors, but have never sized and source one for a project.
The project i am working on is to modify an inductive sensor connected to a PLC system i am working on. The problem is that the inductive oil sensor i have takes 15-30VDC and outputs 5VDC wich is not enough to drive my 24V PLC I/O card.
I was thinking about using a BJT transistor to relay the needed voltage to pull in this input, I'm just lost in picking out the right transistor to use other than that i will probably need an NPN since my base current will be (+).
The supplied Voltage to the base will be around 1 volt- cut out and 5 Volts cut-in. This will be used to switch 24V to my PLC card
Any help on a common trans to use, sizing of the transistors needed, and any insight on how to preform this math on my own would be greatly appreciated.
The project i am working on is to modify an inductive sensor connected to a PLC system i am working on. The problem is that the inductive oil sensor i have takes 15-30VDC and outputs 5VDC wich is not enough to drive my 24V PLC I/O card.
I was thinking about using a BJT transistor to relay the needed voltage to pull in this input, I'm just lost in picking out the right transistor to use other than that i will probably need an NPN since my base current will be (+).
The supplied Voltage to the base will be around 1 volt- cut out and 5 Volts cut-in. This will be used to switch 24V to my PLC card
Any help on a common trans to use, sizing of the transistors needed, and any insight on how to preform this math on my own would be greatly appreciated.