Whenever I’m in the car listening to my favourite CD, it always happens; my batteries go dead. To solve that problem, I built this extremely simple regulator circuit. It steps down the 12V from the ...
Q: How can I play my CDs in my new car, which does not have a CD slot? It only has a USB connection and Bluetooth, so I can't even use a portable CD player with an auxiliary cable. I have hundreds of ...