Hi,
I have a 9V battery that goes to a 78L05 voltage regulator through a DC socket that disconnects the negative of the battery when a DC jack is inserted, i.e. external power is used, so it's a simple chain (see attachment).
So when you insert a DC jack the negative of the battery is disconnected from the circuit, but the positive output of the 78L05 is not, so I use a schottky diode between the positive output of the 78L05 and the positive wire from the DC socket.
Is there a simpler or better way to do this? Or method that won't have a voltage drop (created by the schottky)?
thanks
I have a 9V battery that goes to a 78L05 voltage regulator through a DC socket that disconnects the negative of the battery when a DC jack is inserted, i.e. external power is used, so it's a simple chain (see attachment).
So when you insert a DC jack the negative of the battery is disconnected from the circuit, but the positive output of the 78L05 is not, so I use a schottky diode between the positive output of the 78L05 and the positive wire from the DC socket.
Is there a simpler or better way to do this? Or method that won't have a voltage drop (created by the schottky)?
thanks