Greetings all.
I was hoping someone might be able to help. I built the attached circuit (not my design...) to drive the tachometer movement in my vintage car. the circuit works great on bench but not in the car. I figured out why... the meter movement in the tachometer is grounded to the case, and it's not possible to 'unground'. The circuit won't work with the grounded movement.
is there a simple way to adapt the output of the circuit to be compatible with the ground referenced meter movement?
Any help is appreciated!
I was hoping someone might be able to help. I built the attached circuit (not my design...) to drive the tachometer movement in my vintage car. the circuit works great on bench but not in the car. I figured out why... the meter movement in the tachometer is grounded to the case, and it's not possible to 'unground'. The circuit won't work with the grounded movement.
is there a simple way to adapt the output of the circuit to be compatible with the ground referenced meter movement?
Any help is appreciated!
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