First of all is it ok? to use Bjts (2n222) in an inverter rather than Mosfets
secondly i have designed a circuit i i'm having trouble with the ratings of resistors , plus the circuit is operating accordingly when both the voltages(the voltage to be inverted 5v and the source voltage of the 555 is 5v ) but as i change the voltage to be inverted to 12v keeping the 555's supply at 5 the inversion is not as according to the principle ,is it need to keep both the voltages same?
secondly i have designed a circuit i i'm having trouble with the ratings of resistors , plus the circuit is operating accordingly when both the voltages(the voltage to be inverted 5v and the source voltage of the 555 is 5v ) but as i change the voltage to be inverted to 12v keeping the 555's supply at 5 the inversion is not as according to the principle ,is it need to keep both the voltages same?