AC Instruments AC Instruments • • • • • • • What is an Instrument? Power Supply Multimeter Function Generator Oscilloscope Project Board (Bread Board) Connector/s What is an Instrument? 1. A tool or implement, especially one for delicate or scientific work. "a surgical instrument“ 2. A measuring device used to gauge the level, position, speed, etc. of something, especially a motor vehicle or aircraft. Power Supply A dual-output laboratory power supplies voltage and current are indicated on three-digit display, can be operated in parallel or in series, and can be operated as constant voltage source or as constant current source. The main attributes of this device is: 1.Voltage and current are indicated on separate LED-meters. 2.The output voltages are available through safety sockets on the front panel. 3.Dual Tracking (Serial and parallel operation) Both lab-outputs can be connected in parallel or in series by means of a switch on the front panel. The left hand unit is then operating as the master control unit. 4.The output values are indicated on the meters of the master unit. 5.The units are equipped with a third output supplying a fixed voltage of 3...6 Volts and a max. Current of 2 A. This output is located on the right side with safety sockets. 6.output on/off switch. Multimeter digital multimeters are designed to measure resistance, current and voltage, and the RMS value of sinusoidal current and voltage. also measure the true RMS (TRMS) value of any waveform. Function Generator • A FG provides voltages of different forms. These may include: sinusoidal, triangular, and square. An adjustable level of DC off set (+ or -) may also be available. In addition, a control may be present to vary the waveform symmetry. Output-voltage frequency and amplitude may have a wide dynamic range. Oscilloscope • This is one of the most important pieces of laboratory test equipment. It is basically a voltage sensing and display device; it cannot measure current directly. However, it can be used to measure a voltage proportional to a desired current, e.g., across a small sampling resistance. • Most modern Scopes have two input channels with adjustable, calibrated, gain. Two signals can thus be viewed separately, or simultaneously if they are synchronized. Calibrated gain settings enable the measurement of voltage amplitude. Project Board (Bread Board) • A breadboard (protoboard) is a construction base for prototyping of electronics, because the solderless breadboard does not require soldering, it is reusable. This makes it easy to use for creating temporary prototypes and experimenting with circuit design. Connector/s The End. Engr. Benedicto Adrian M. Adriano