Hi guys. I'm new to electronics, but I'm really getting to enjoy it. This is my first question.
I'm running a breadboard project on a power supply (AC to 12v DC adapter). My breadboard uses a solenoid valve running on the the full 12volts while some controlling 555 timers and a sound chip run on a stable 3.3v. The 555 chips should control the 12v valve by switching it on and off. All it does now is light an LED when the valve is supposed to be on.
How do I do that right?
I've tried letting the 3.3v part run on its own battery power supply while swithing the other 12v supply - combining two power supplies. No luck.
I've tried branching off a 3.3v stable signal from the 12v supply (using a zener), but I suspect that doesn't leave enough amperage for my chips to run properly.
I've messed around with voltage regulators, zener diodes and NPN transistors, but no luck - all I got was burned, smoke and some weird smells
Any input would be greatly appreciated!
Mike
I'm running a breadboard project on a power supply (AC to 12v DC adapter). My breadboard uses a solenoid valve running on the the full 12volts while some controlling 555 timers and a sound chip run on a stable 3.3v. The 555 chips should control the 12v valve by switching it on and off. All it does now is light an LED when the valve is supposed to be on.
How do I do that right?
I've tried letting the 3.3v part run on its own battery power supply while swithing the other 12v supply - combining two power supplies. No luck.
I've tried branching off a 3.3v stable signal from the 12v supply (using a zener), but I suspect that doesn't leave enough amperage for my chips to run properly.
I've messed around with voltage regulators, zener diodes and NPN transistors, but no luck - all I got was burned, smoke and some weird smells
Any input would be greatly appreciated!
Mike