Hi All,
I want to create a simple switch. Wondering if someone can help me out.
The input voltage varies between 0v to 14v DC (Automated)
Output - Light bulb which requires 12v app to light up (as required) anything less than the required voltage still lights up the bulb but dimly.
What I want to do is to restrict the on off state according to voltage supplied.
Basically I want the light bulb to turn on if the voltage supplied is = or > 11v
I was thinking of using a transistor with a resistor so that the transistor is active only when 11v or more is applied. This will collect the voltage from the same source and pass it through to the light bulb. And if the voltage drops below 11v then the transistor will switch off?
Is there a better design? I was thinking of using a relay but I want it to be reliable and longer lasting.
And what type of components can I use to run this cool or would it better to build it in a heat sink casing?
I want to create a simple switch. Wondering if someone can help me out.
The input voltage varies between 0v to 14v DC (Automated)
Output - Light bulb which requires 12v app to light up (as required) anything less than the required voltage still lights up the bulb but dimly.
What I want to do is to restrict the on off state according to voltage supplied.
Basically I want the light bulb to turn on if the voltage supplied is = or > 11v
I was thinking of using a transistor with a resistor so that the transistor is active only when 11v or more is applied. This will collect the voltage from the same source and pass it through to the light bulb. And if the voltage drops below 11v then the transistor will switch off?
Is there a better design? I was thinking of using a relay but I want it to be reliable and longer lasting.
And what type of components can I use to run this cool or would it better to build it in a heat sink casing?