J
Jim
- Jan 1, 1970
- 0
trying to drop 12 vdc to 5vdc for an extended scale A/D, I would like
to use a TI431 to sense anything above 9 or 10 volts, feed it into my
uC for display on a digital meter. I am a software guy with limited HW
experience so here are my questions, they all pertain to a simple
shunt regulator circuit, eg; current resistor on Vin. Ref tapped into
voltage divider (R1, R2)
with a regulated input voltage that of 12v and a uC A/D pin that can
accept 5v, what resistors do I need for the current resistor and the
voltage dividers in order to capture the top 5 volts (lets say 9v and
above).
If you would rather "teach me to fish" I will accept a formula that is
written in 8th grade terms ; )
Any help
Thanks
to use a TI431 to sense anything above 9 or 10 volts, feed it into my
uC for display on a digital meter. I am a software guy with limited HW
experience so here are my questions, they all pertain to a simple
shunt regulator circuit, eg; current resistor on Vin. Ref tapped into
voltage divider (R1, R2)
with a regulated input voltage that of 12v and a uC A/D pin that can
accept 5v, what resistors do I need for the current resistor and the
voltage dividers in order to capture the top 5 volts (lets say 9v and
above).
If you would rather "teach me to fish" I will accept a formula that is
written in 8th grade terms ; )
Any help
Thanks