Opto isolator that uses a nontransparent hollow tube as the optical waveguide extending between {HEAD ~ the transmitter} and {TAIL ~ receiver modules} of the opto isolator 
Opto isolator that uses a nontransparent hollow tube as the optical waveguide extending between { HEAD ~ the transmitter } and { TAIL ~ receiver modules } of the opto isolator
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH