Hi,
My electronics knowledge is a little bit rusty, and I'm hoping someone can help me designing a small circuit.
I have a switch controlled signal giving GND when switch is not active and -6,75V when active. As an output, I want GND when the switch is active and not connected (just something else than GND) when the switch is released.
My problem is that the control voltage (-6,75V) can maximum give a current of 0,06 mA, making it impossible to run a relay directly. I would also like to avoid any external power supply, but if there is no other solution, it's okay to use external PS.
Any suggetions for the curcuit in between the input and output???
My electronics knowledge is a little bit rusty, and I'm hoping someone can help me designing a small circuit.
I have a switch controlled signal giving GND when switch is not active and -6,75V when active. As an output, I want GND when the switch is active and not connected (just something else than GND) when the switch is released.
My problem is that the control voltage (-6,75V) can maximum give a current of 0,06 mA, making it impossible to run a relay directly. I would also like to avoid any external power supply, but if there is no other solution, it's okay to use external PS.
Any suggetions for the curcuit in between the input and output???