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.

Potentiometric Voltmeter

Textbook - Vol. VI - Experiments - Chapter 3 - DC Circuits
PARTS AND MATERIALS Two 6 volt batteries One potentiometer, single turn, 10 kΩ, linear taper (Radio Shack catalog # 271-1715) Two high-value resistors (at least 1 MΩ each) Sensitive voltage detector (from the previous experiment) Analog voltmeter (from the previous experiment) The potentiometer value is not critical: anything from 1 kΩ to 100 kΩ is acceptable. If you have built the “precision potentiometer” described earlier in this chapter, it is recommended that you use it in

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

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”).

Tachogenerators

Textbook - Vol. I - Direct Current (DC) - Chapter 9 - Electrical Instrumentation Signals
An electromechanical generator is a device capable of producing electrical power from mechanical energy, usually the turning of a shaft. When not connected to a load resistance, generators will generate voltage roughly proportional to shaft speed. With precise construction and design, generators can be built to produce very precise voltages for certain ranges of shaft speeds, thus making them well-suited as measurement devices for shaft speed in mechanical equipment. A

Building Simple Resistor Circuits

Textbook - Vol. I - Direct Current (DC) - Chapter 5 - Series And Parallel Circuits
In the course of learning about electricity, you will want to construct your own circuits using resistors and batteries. Some options are available in this matter of circuit assembly, some easier than others. In this section, I will explore a couple of fabrication techniques that will not only help you build the circuits shown in this chapter, but also more advanced circuits. Using Alligator Clip Jumper Wires for Circuit Construction

Safe Meter Usage

Textbook - Vol. I - Direct Current (DC) - Chapter 3 - Electrical Safety
Using an electrical meter safely and efficiently is perhaps the most valuable skill an electronics technician can master, both for the sake of their own personal safety and for proficiency at their trade. It can be daunting at first to use a meter, knowing that you are connecting it to live circuits which may harbor life-threatening levels of voltage and current. This concern is not unfounded, and it is always

Ohmmeter Usage

Textbook - Vol. VI - Experiments - Chapter 2 - Basic Concepts and Test Equipment
Parts and Materials Multimeter, digital or analog Assorted resistors (Radio Shack catalog # 271-312 is a 500-piece assortment) Rectifying diode (1N4001 or equivalent; Radio Shack catalog # 276-1101) Cadmium Sulphide photocell (Radio Shack catalog # 276-1657) Breadboard (Radio Shack catalog # 276-174 or equivalent) Jumper wires Paper Pencil Glass of water Table salt This experiment describes how to measure the electrical resistance of several objects. You need not possess all items listed above in

Practical Power Factor Correction

Textbook - Vol. II - Alternating Current (AC) - Chapter 11 - Power Factor
When the need arises to correct for poor power factor in an AC power system, you probably won’t have the luxury of knowing the load’s exact inductance in henrys to use for your calculations. You may be fortunate enough to have an instrument called a power factor meter to tell you what the power factor is (a number between 0 and 1), and the apparent power (which can be figured

Conductor Ampacity

Textbook - Vol. I - Direct Current (DC) - Chapter 12 - Physics Of Conductors And Insulators
The smaller the cross-sectional area of any given wire, the greater the resistance for any given length, all other factors being equal. A wire with greater resistance will dissipate a greater amount of heat energy for any given amount of current, the power being equal to P=I2R. Dissipated power due to a conductor’s resistance manifests itself in the form of heat, and excessive heat can be damaging

Simple Series Circuits

Textbook - Vol. I - Direct Current (DC) - Chapter 5 - Series And Parallel Circuits
On this page, we’ll outline the three principles you should understand regarding series circuits: Current: The amount of current is the same through any component in a series circuit. Resistance: The total resistance of any series circuit is equal to the sum of the individual resistances. Voltage: The supply voltage in a series circuit is equal to the sum of the individual voltage drops. Let’s take a look

Meter Check of a Diode

Textbook - Vol. III - Semiconductors - Chapter 3 - Diodes and Rectifiers
The Functionality of Diode Polarity Being able to determine the polarity (cathode versus anode) and basic functionality of a diode is a very important skill for the electronics hobbyist or technician to have. Since we know that a diode is essentially nothing more than a one-way valve for electricity, it makes sense we should be able to verify its one-way nature using a DC (battery-powered) ohmmeter as in Figure below.

A Very Simple Circuit

Textbook - Vol. VI - Experiments - Chapter 2 - Basic Concepts and Test Equipment
Parts and Materials 6-volt battery 6-volt incandescent lamp Jumper wires Breadboard Terminal strip From this experiment on, a multimeter is assumed to be necessary and will not be included in the required list of parts and materials. In all subsequent illustrations, a digital multimeter will be shown instead of an analog meter unless there is some particular reason to use an analog meter. You are encouraged to use both types

Basic Ammeter Use

Worksheets - Basic Electricity
Show how this ammeter would be connected to the light bulb circuit to measure the circuit’s electric current: Also, draw a schematic diagram of this same circuit (with the ammeter connected).

Peak Detector

Textbook - Vol. III - Semiconductors - Chapter 3 - Diodes and Rectifiers
A peak detector is a series connection of a diode and a capacitor outputting a DC voltage equal to the peak value of the applied AC signal. The circuit is shown in Figure below with the corresponding SPICE net list. An AC voltage source applied to the peak detector, charges the capacitor to the peak of the input. The diode conducts positive “half cycles,” charging the capacitor to the waveform

Voltmeter Usage

Textbook - Vol. VI - Experiments - Chapter 2 - Basic Concepts and Test Equipment
PARTS AND MATERIALS Multimeter, digital or analog Assorted batteries One light-emitting diode (Radio Shack catalog # 276-026 or equivalent) Small “hobby” motor, permanent-magnet type (Radio Shack catalog # 273-223 or equivalent) Two jumper wires with “alligator clip” ends (Radio Shack catalog # 278-1156, 278-1157, or equivalent) A multimeter is an electrical instrument capable of measuring voltage, current, and resistance. Digital multimeters have numerical displays, like digital clocks, for indicating the quantity of voltage,

ElectroStatic Discharge

Textbook - Vol. III - Semiconductors - Chapter 9 - Practical Analog Semiconductor Circuits
Volume I chapter 1.1 discusses static electricity, and how it is created. This has a lot more significance than might be first assumed, as control of static electricity plays a large part in modern electronics and other professions. An ElectroStatic Discharge event is when a static charge is bled off in an uncontrolled fashion and will be referred to as ESD hereafter. ESD comes in many forms, it can be as

Basic Troubleshooting Strategies

Worksheets - Basic Electricity
A chandelier has five light bulbs in it, and one of them is not working. The problem could be in the chandelier’s wiring (open wire connection, open connection in socket), or in the bulb itself (burned-out filament). Describe a procedure for determining the location of the problem (chandelier vs. bulb), without using any electrical test instruments.

Edge-triggered Latches: Flip-Flops

Textbook - Vol. IV - Digital - Chapter 10 -Multivibrators
So far, we’ve studied both S-R and D latch circuits with enable inputs. The latch responds to the data inputs (S-R or D) only when the enable input is activated. In many digital applications, however, it is desirable to limit the responsiveness of a latch circuit to a very short period of time instead of the entire duration that the enabling input is activated. One method of enabling a

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.

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