Contents
How to convert 0-5V signal to sealed gauge?
Convert 0-5V signal to… What is the difference between sealed gauge and vented gauge reference?
How does a voltage divider load the source signal?
The voltage divider will load the source signal. You need a divider that puts out 1/4 of the input signal. Any divider with the top resistor 3x the bottom will do that. In this case R1 = 3*R2. The impedance looking into the divider from the source will be R1+R2.
How many ωs does an 8 bit a / DS need?
In old PICs with 8 or 10 bit A/Ds, this was generally 10kΩ. This is less in some newer faster A/Ds or at higher resolution like 12 bits. Some of the dsPIC family require only a few 100 Ωs or less. Frequency response.
How is the signal divided at high frequencies?
At high frequencies, the capacitors dominate and divide the signal by 4. The crossover where the resistive and capacitive actions are about equal is 53 kHz in this example. By the way, this is how dividing scope probes work. A “10x” probe divides the signal by 10.
How to level shift 5V to 3.3V?
Using 2 resistors and an input voltage, we can create an output voltage that is a fraction of the input. Below you can see the formula that you need to use to calculate the resistors that you need in your circuit: Solving the formula above with Vin=5V, R1=1000ohms and Vout=3.3V. We get R2~=2000ohms.
How to calculate gain from 3.3V to 5V?
Your gain must be the value, that when you will have 3.3V on the input, the output will have to be set to 5V. So let’s say, that your gain will be calculated with equation Uout,max/Uin,max -> so 5V / 3.3V = 1.51515.
Do you have to set the output voltage to 5V?
If you use a non-inverting operational amplifier (as in this schematic, you want the output voltage the same polarity as input voltage). Your gain must be the value, that when you will have 3.3V on the input, the output will have to be set to 5V.
How can I get a true 0V signal?
In order to get true 0V operation you need to pull the -VE supply pin below 0V or use a bipolar supply. Otherwise look for a modern single supply rail-to-rail opamp such as LMC6081. The 741 opamp is over 40 years old and has past its best use date.
How does a 0-10V pressure gauge work?
It’s for A-D purposes. A pressure gauge with a 0-10V analog signal going to a different manufacturer’s pressure readout, with a 1-5V analog input. It then just converts the analog signal to a digital display. How much experience do you have with electronics?
How does a trans conductance amplifier scale to 5V?
One method that comes to mind is a trans-conductance amplifier, so the output current scales with the input voltage. Put the output current through a precision resistor to produce a 1V-5V voltage across that resistor based on output current, which is directly related to input voltage.