Demystifying circuit design with Precision DAC Part 1

Sponsored by Texas Instruments

The presentation addresses the Precision DAC Architecture overview, DAC spec parameters and the theory of operation & Design example. All the information is importer for engineer when work on the system design.

Part 1: Speaker starts from a Precision DAC portfolio table to introduce the features as well as the popular application in the industrial market.

Demystifying circuit design with Precision DAC Part 2

Sponsored by Texas Instruments

The presentation addresses the Precision DAC Architecture overview, DAC spec parameters and the theory of operation & Design example. All the information is importer for engineer when work on the system design.

Part 2: In this speaker addresses the resistor ladder (3-bit), the theory and the way it works. Also introduce the R-2R DAC’s advantage, disadvantage and the applications, such as precision instrumentation, industrial control and automation, test equipment.

Ohm’s Law - How Voltage, Current, and Resistance Relate

Textbook - Vol. I - Direct Current (DC) - Chapter 2 - Ohm's Law
The first, and perhaps most important, the relationship between current, voltage, and resistance is called Ohm’s Law, discovered by Georg Simon Ohm and published in his 1827 paper, The Galvanic Circuit Investigated Mathematically. Voltage, Current, and Resistance An electric circuit is formed when a conductive path is created to allow electric charge to continuously move. This continuous movement of electric charge through the conductors of a circuit is called a

Oscilloscope Trigger Controls

Worksheets - AC Electric Circuits
A very useful tool for observing rotating objects is a strobe light. Basically, a strobe light is nothing more than a very bright flash bulb connected to an electronic pulse generating circuit. The flash bulb periodically emits a bright, brief pulse of light according to the frequency set by the pulse circuit. By setting the period of a strobe light to the period of a rotating object (so the bulb

Basic Ohmmeter Use

Worksheets - Basic Electricity
Explain how an ohmmeter is able to measure the resistance of a component (in this case, a light bulb) when there is no battery or other source of power connected to it: Also, identify the reading you would expect the ohmmeter to indicate if the light bulb were burnt out (failed “open”).

Simple Series Circuits

Textbook - Vol. I - Direct Current (DC) - Chapter 5 - Series And Parallel Circuits
Let’s start with a series circuit consisting of three resistors and a single battery: The first principle to understand about series circuits is that the amount of current is the same through any component in the circuit. This is because there is only one path for electrons to flow in a series circuit, and because free electrons flow through conductors like marbles in a tube, the rate of flow

Fundamentals of SPICE programming

Textbook - Vol. V - Reference - Chapter 7 - Using The spice Circuit Simulation Program
Programming a circuit simulation with SPICE is much like programming in any other computer language: you must type the commands as text in a file, save that file to the computer’s hard drive, and then process the contents of that file with a program (compiler or interpreter) that understands such commands. In an interpreted computer language, the computer holds a special program called an interpreter that translates the program

Ammeter Design

Worksheets - DC Electric Circuits
What would happen to this meter movement, if connected directly to a 6-volt battery?

Voltmeter Impact on Measured Circuit

Textbook - Vol. I - Direct Current (DC) - Chapter 8 - DC Metering Circuits
Every meter impacts the circuit it is measuring to some extent, just as any tire-pressure gauge changes the measured tire pressure slightly as some air is let out to operate the gauge. While some impact is inevitable, it can be minimized through good meter design. Voltage Divider Circuit Since voltmeters are always connected in parallel with the component or components under test, any current through the voltmeter will contribute to

Measurements of AC Magnitude

Textbook - Vol. II - Alternating Current (AC) - Chapter 1 - Basic AC Theory
So far we know that AC voltage alternates in polarity and AC current alternates in direction. We also know that AC can alternate in a variety of different ways, and by tracing the alternation over time we can plot it as a “waveform.” We can measure the rate of alternation by measuring the time it takes for a wave to evolve before it repeats itself (the “period”), and express this

Make Your Own Multimeter

Textbook - Vol. VI - Experiments - Chapter 3 - DC Circuits
PARTS AND MATERIALS Sensitive meter movement (Radio Shack catalog # 22-410) Selector switch, single-pole, multi-throw, break-before-make (Radio Shack catalog # 275-1386 is a 2-pole, 6-position unit that works well) Multi-turn potentiometers, PCB mount (Radio Shack catalog # 271-342 and 271-343 are 15-turn, 1 kΩ and 10 kΩ “trimmer” units, respectively) Assorted resistors, preferably high-precision metal film or wire-wound types (Radio Shack catalog # 271-309 is an assortment of metal-film resistors, +/- 1% tolerance) Plastic or metal mounting

Meter Check of a Transistor (BJT)

Textbook - Vol. III - Semiconductors - Chapter 4 - Bipolar Junction Transistors
Bipolar transistors are constructed of a three-layer semiconductor “sandwich” either PNP or NPN. As such, transistors register as two diodes connected back-to-back when tested with a multimeter’s “resistance” or “diode check” function as illustrated in Figure below. Low resistance readings on the base with the black negative (-) leads correspond to an N-type material in the base of a PNP transistor. On the symbol, the N-type material is “pointed”

Magnetism and Electromagnetism

Video Lectures
Okay, we're in Section 2.4. We're going to be introducing Magnetism and Electromagnetism in this particular section. Magnetic and electromagnetic fields play important roles and are fundamental to electronic and electromechanical systems. Motors, generators, speakers, microphones, computer storage devices like hard drives and many other devise are based upon magnetic, electromagnetic principles. Okay, magnetic fields. Here we have a picture of one. Surrounding all magnetic objects is an invisible but measurable

Hand Calculator Use

Textbook - Vol. I - Direct Current (DC) - Chapter 4 - Scientific Notation And Metric Prefixes
Scientific Notation with a Hand Calculator To enter numbers in scientific notation into a hand calculator, there is usually a button marked “E” or “EE” used to enter the correct power of ten. For example, to enter the mass of a proton in grams (1.67 x 10-24 grams) into a hand calculator, I would enter the following keystrokes: [1] [.] [6] [7] [EE] [2] [4] [+/-] The [+/-] keystroke changes the sign of the power (24) into a

Kelvin (4-wire) Resistance Measurement

Textbook - Vol. I - Direct Current (DC) - Chapter 8 - DC Metering Circuits
Suppose we wished to measure the resistance of some component located a significant distance away from our ohmmeter. Such a scenario would be problematic, because an ohmmeter measures all resistance in the circuit loop, which includes the resistance of the wires (Rwire) connecting the ohmmeter to the component being measured (Rsubject): Usually, wire resistance is very small (only a few ohms per hundreds of feet, depending primarily on the gauge

Magnetic Units of Measurement

Textbook - Vol. I - Direct Current (DC) - Chapter 14 - Magnetism and Electromagnetism
If the burden of two systems of measurement for common quantities (English vs. metric) throws your mind into confusion, this is not the place for you! Due to an early lack of standardization in the science of magnetism, we have been plagued with no less than three complete systems of measurement for magnetic quantities. First, we need to become acquainted with the various quantities associated with magnetism. There are quite

Ohmmeter Design

Textbook - Vol. I - Direct Current (DC) - Chapter 8 - DC Metering Circuits
Though mechanical ohmmeter (resistance meter) designs are rarely used today, having largely been superseded by digital instruments, their operation is nonetheless intriguing and worthy of study. The purpose of an ohmmeter, of course, is to measure the resistance placed between its leads. This resistance reading is indicated through a mechanical meter movement which operates on electric current. The ohmmeter must then have an internal source of voltage to create the

Frequency and Phase Measurement

Textbook - Vol. II - Alternating Current (AC) - Chapter 12 - AC Metering Circuits
An important electrical quantity with no equivalent in DC circuits is frequency. Frequency measurement is very important in many applications of alternating current, especially in AC power systems designed to run efficiently at one frequency and one frequency only. If the AC is being generated by an electromechanical alternator, the frequency will be directly proportional to the shaft speed of the machine, and frequency could be measured simply by measuring

Active Loads in Amplifier Circuits

Worksheets - Discrete Semiconductor Devices and Circuits
We know that the current in a series circuit may be calculated with this formula: I = Etotal Rtotal We also know that the voltage dropped across any single resistor in a series circuit may be calculated with this formula: ER = I R Combine these two formulae into one, in such a way that the I variable is eliminated, leaving only ER expressed in terms of Etotal, Rtotal, and R.

Voltmeter Design

Worksheets - DC Electric Circuits
Suppose I were about to measure an unknown voltage with a manual-range voltmeter. This particular voltmeter has several different voltage measurement ranges to choose from: 500 volts 250 volts 100 volts 50 volts 25 volts 10 volts 5 volts What range would be best to begin with, when first measuring this unknown voltage with the meter? Explain your answer.

Basic Voltmeter Use

Worksheets - Basic Electricity
What will this voltmeter register when connected to a battery as shown (assume a battery voltage of 6 volts)? Explain your answer.

Basic Oscilloscope Operation

Worksheets - AC Electric Circuits
An oscilloscope is a very useful piece of electronic test equipment. Most everyone has seen an oscilloscope in use, in the form of a heart-rate monitor (electrocardiogram, or EKG) of the type seen in doctor’s offices and hospitals. When monitoring heart beats, what do the two axes (horizontal and vertical) of the oscilloscope screen represent? In general electronics use, when measuring AC voltage signals, what do the two axes