srob
- 22nd September 2005, 20:12
Trying to link a KMC-10 magnetic current sensor to a 16F73 ADC input, but also need a 0 to 10 volt aux output.
Because the sensor is a bridge (output in mV) am using a classic differential amplifier (1 op-amp, 4 resistors). To keep circuit simple decided to use a single ended op-amp, powered from a 7812 regulator.
Choosing the best op-amp proving a nightmare (no probs if I had a -12V rail), just unable to get the output to be 0V for no current I/P. So far had best results from a LM383, TLC271 and CA3160.
Wondered what amplifer others use for sensor signal conditioning?
Because the sensor is a bridge (output in mV) am using a classic differential amplifier (1 op-amp, 4 resistors). To keep circuit simple decided to use a single ended op-amp, powered from a 7812 regulator.
Choosing the best op-amp proving a nightmare (no probs if I had a -12V rail), just unable to get the output to be 0V for no current I/P. So far had best results from a LM383, TLC271 and CA3160.
Wondered what amplifer others use for sensor signal conditioning?