8) This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge has been acquired of safe working practices and designing a signal-conditioning subsystem. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EH185A Principles of Signal Conditioning Evidence shall show an understanding of principles of signal conditioning, applying safe working practices and relevant Standards, Codes and Regulations to an extent indicated by the following aspects: T1. Differential amplifiers of suitable characteristics to meet system objective differential gain, common mode rejection ratio and the required CMRR variable gain input stage connections for an instrumentation amplifier to meet given objectives. T2. Audio frequency integrator working to given specifications ideal integrator practical difficulty with the ideal circuit common applications of the integrator. T3. Operational amplifier circuits use of d.c. offset and capacitive blocking and Norton amplifiers powered by a single supply operation of single-supply inverting and noninverting amplifiers employing DC offset bias at the input and blocking capacitors operation of a high input resistance unity gain circuit symbol of the Norton (input current difference) amplifier areas of use for single-supply amplifiers. T4. Comparator circuits (open loop, limited swing and hysteresis) using operational amplifiers: ideal op-amp comparator typical uses of the comparator. comparators with limited (i) negative swing and (ii) both positive negative swing hysteresis comparator with positive resistor divider feedback and calculate the input switching voltages. desirable properties of an operational amplifier for use as comparator and the characteristics of comparator op amps. op amp oscillators T5. Amplifiers with given piecewise linear transfer characteristics T6. Operation and building precision of half-wave and fullwave rectifiers precision two-diode half-wave rectifier typical applications of precision rectifiers. T7. Operation of and build a sine - triangle – square function generator: block diagram of a sine-triangle-square signal generator using an integrator, comparator and sine-wave shaper. waveforms at various points in the circuit. frequency range and setting of frequency changes. Timer circuits function generators and oscillators. T8. Sensors and transducers static and dynamic characteristics Sensor types encompassing: strain and force thermocouples displacement, location, proximity motion light and radiation pressure T9. Feedback Control Systems basics closed loop systems open loop systems T10. Actuators and Drive Systems types and characteristics Power Ics PLL circuits |