It depends on what you want the signal to be when it is not 12V. If it is zero volts then a simple transistor will do as in the above link. However I have had eproms that required to switch between 5V and 12V. Which is it?
It depends on what you want the signal to be when it is not 12V. If it is zero volts then a simple transistor will do as in the above link. However I have had eproms that required to switch between 5V and 12V. Which is it?