I want to switch on a relay when both a 5v logic input is high and a (LM741 used as a) comparator is around +10v, and the circuit I planned to use is below.
The problem I see with the circuit is when
BUF1 output is low, (0v) and
OA1 output is low, (-10v) the base of
Q1 will be at 0v, but the emitter will be floating. Could this destroy Q1, given that
Vebo absolute maximum for BC547A is 6v?