I need to send a signal through fiber optic to switch a DC/DC Converter (I want it to be on when there is photocurrent, and off when there isn't), I can't use a normal cable because I want to do that in a region sensitive to EMI (ElectroMagnetic Interference).
I'm also using fiber optic for transmitting another signals and that works well, but I'm struggling with the design of this switch.
I thought of using a NPN or PNP as a switch but I don't know how can I polarise it, since I don't know how the DC/DC Converter will affect to the polarisation of the transistor.
For the fiber optic link I'm using the transmitter SFH757V and the receiver SFH250V, and like the photo, my DC/DC Converter is TSR 1-2450.
Thanks in advance!