08-31-2020, 02:36 AM
no tacho schematic but when I look inside the input is transistor inverted
so 0v becomes 12vdc and then via 1 resistor charges the integrated cap. this in turn, is connected to one more transistor that runs the tacho analog meter.
IIRC there is only 2 transistors there simple as heck.
last looked 10 years ago. but this is my memory from then.
so 0v becomes 12vdc and then via 1 resistor charges the integrated cap. this in turn, is connected to one more transistor that runs the tacho analog meter.
IIRC there is only 2 transistors there simple as heck.
last looked 10 years ago. but this is my memory from then.
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