I'm crap when it comes to analogue electronics..
I need to interface a voltage from a angular output to an older system.
The system provides 8v, BUT!! there are two 100 ohm resistors on the 8v rail and the 0 volt rail.
The inclinometer needs 5v... Said output ranges from 0.6v ( -80°) up to 4.4v (+80°)..
I will sit the device so I get a nice 90° output... The system requires a 3 ~ 4v input 3 being 90° and 4 being 0°..
with a bit of playing space 1 have chosen 3.15V = 90° and 3.85 = 0°..
The 100 ohm resistor causes the output of the LM79L05 to be 2.85v. No matter how attenuate the output I cannot get a clean 90° output between 3 ~ 4 volts.. If I use a 220ohm resistor from the output to the system and place a diode to"prop" it up I get somewhere near, but diodes aren't the best when it comes to temp stability.
Can someone help??
I need to interface a voltage from a angular output to an older system.
The system provides 8v, BUT!! there are two 100 ohm resistors on the 8v rail and the 0 volt rail.
The inclinometer needs 5v... Said output ranges from 0.6v ( -80°) up to 4.4v (+80°)..
I will sit the device so I get a nice 90° output... The system requires a 3 ~ 4v input 3 being 90° and 4 being 0°..
with a bit of playing space 1 have chosen 3.15V = 90° and 3.85 = 0°..
The 100 ohm resistor causes the output of the LM79L05 to be 2.85v. No matter how attenuate the output I cannot get a clean 90° output between 3 ~ 4 volts.. If I use a 220ohm resistor from the output to the system and place a diode to"prop" it up I get somewhere near, but diodes aren't the best when it comes to temp stability.
Can someone help??