GaryMachin
New Member
First, Hello and second I'm new to electronics so please forgive my newbie questions.
I'm looking for a circuit to switch between two voltages.
What I have:
1) A 0.5vdc signal
2) Source Voltage A (0.38vdc) - simulates an oxygen sensor and fed to an engine computer to prevent it reducing fuel to injectors.
3) Source Voltage B (0 to 1vdc) - variable output from an oxygen sensor
What I need:
When 0.5vdc signal is on, source voltage A is passed (to a car engine computer)
When 0.5vdc signal is off, source voltage B is passed.
If the signal voltage were higher (say 5vdc) I would have used a simple mechanical relay, does a solid state relay exist in these ranges? Or, does anyone know of a simple circuit that could do this?
I'm looking for a circuit to switch between two voltages.
What I have:
1) A 0.5vdc signal
2) Source Voltage A (0.38vdc) - simulates an oxygen sensor and fed to an engine computer to prevent it reducing fuel to injectors.
3) Source Voltage B (0 to 1vdc) - variable output from an oxygen sensor
What I need:
When 0.5vdc signal is on, source voltage A is passed (to a car engine computer)
When 0.5vdc signal is off, source voltage B is passed.
If the signal voltage were higher (say 5vdc) I would have used a simple mechanical relay, does a solid state relay exist in these ranges? Or, does anyone know of a simple circuit that could do this?