I am very new to electronics. I am using a reed switch with 2 pin. Which acts as a switch near to magnet.
I want to keep the switch ON when magnet is not near and OFF when its near to magnet.
I thought to use BC547 as it can act as a switch as well. And can help me to perform this task. But doing this, I realise it keep drawing the voltage and current even in OFF state.
Someone can please help with this, where it don't consume any additional voltage and break the circuit when magnet is close to switch.