Hi, guys.
I previously read a thread on voltage scaling and the quote below is from that thread.
The original question was for a similar input voltage of 3.2 to 4.2
I need to scale an input voltage of 3.2 to 4.5 volts down to 1 to 2v ( or 0 to 1v to drive a 1v panel meter)
Input voltage will be 5v.
If anyone can calculate the resistors for that would be great.
The input of pin 3 will have a 10k thermistor to positive and 10k resistor to negative to create a potential divider, so the voltage goes up with with increasing temperature.
Also, is there a transistor alternative rather than an op amp ?
I previously read a thread on voltage scaling and the quote below is from that thread.
The original question was for a similar input voltage of 3.2 to 4.2
I need to scale an input voltage of 3.2 to 4.5 volts down to 1 to 2v ( or 0 to 1v to drive a 1v panel meter)
Input voltage will be 5v.
If anyone can calculate the resistors for that would be great.
The input of pin 3 will have a 10k thermistor to positive and 10k resistor to negative to create a potential divider, so the voltage goes up with with increasing temperature.
Also, is there a transistor alternative rather than an op amp ?
So you need this circuit:
Resistors R3 and R4 need to be very accurate.