Friday, August 11, 2017

Teralab Electronics projects - Robert Hunt

This site is an attempt to document some of the physics experiments and science projects which I have conducted in my laboratory at home. These experiments include high vacuum, electron optics and electrostatics. There is also a virtual museum of scientific instruments, antique lamps and antique valves. See Tera-fying Experiments, Virtual Museum and X-Ray Gallery.

Teralab Electronics projects

"My father was interested in T.E.Lawrence and used to visit Pat and Joyce Knowles who looked after Lawrence's cottage. Because they lived way out in the country side, they were not connected to the electricity supply. Pat generated electricity to charge a small room full of accumulators using solar panels and windmills. Pat encouraged my scientific interest by giving me old electronic equipment to play with." - Robert Hunt

Teralab Electronics projects - Tesla Coil

Electronics projects - Video Monitor, Geiger Counter, Relay and DAC Controller, A small Tesla Coil.

Monday, August 07, 2017

e-puck robot - Open bot for Education

The main goal of this project is to develop a miniature mobile robot for educational purposes at university level.

To help the creation of a community inside and outside EPFL, the project is based on an open hardware concept, where all documents are distributed and submitted to a license allowing everyone to use and develop for it.

This project has been started at the Ecole Polytechnique Fédérale de Lausanne as collaboration between the Autonomous Systems Lab, the Swarm-Intelligent Systems group and the Laboratory of Intelligent System.

e-puck robot - Open bot for Education

e-puck robot - Open bot for Education

Plan for Robot

"The robot should cover a large spectrum of educational activities and should therefore have a large potential in its sensors, processing power and extensions. Potential educational fields are, for instance, mobile robotics, real-time programming, embedded systems, signal processing, image or sound feature extraction, human-machine interaction or collective systems... "

Tuesday, August 01, 2017

The Art of Electronics – Paul Horowitz Winfield Hill

The Art of Electronics covers the full range of subjects normally treated in electronics books, as well as a rich complement of important but neglected topics.

The Art of Electronics, by Paul Horowitz and Winfield Hill

The book covers many areas of circuit design, from basic DC voltage, current, and resistance, to active filters and oscillators, to digital electronics, including microprocessors and digital bus interfacing. It also includes discussions of such often-neglected areas as high-frequency, high-speed design techniques and low-power applications.

The Art of Electronics – Paul Horowitz Winfield Hill

Learning the Art of Electronics - A Hands-On Lab Course

This introduction to circuit design is unusual in several respects. First, it offers not just explanations, but a full course. Each of the twenty-five sessions begins with a discussion of a particular sort of circuit followed by the chance to try it out and see how it actually behaves.

The Art of Electronics - Paul Horowitz Winfield Hill

The book includes many example circuits. In addition to having examples of good circuits, it also has examples of bad ideas, with discussions of what makes the good designs good and the bad ones bad. It can be described as a cross between a textbook and reference manual, though without the chapter-end questions and exercises which are often found in textbooks.

Paul Horowitz is a Research Professor of Physics and of Electrical Engineering at Harvard University, where in 1974 he originated the Laboratory Electronics course from which emerged The Art of Electronics.

Winfield Hill is by inclination an electronics circuit-design guru. After dropping out of the Chemical Physics graduate program at Harvard University.

Monday, July 10, 2017

Measure resistance and capacitance without an A/D

This article describes how to measure values of a variable resistor or a variable capacitor using a microcontroller to measure the RC charge time to a constant threshold voltage. A variety of these "one-shot" circuits are described and the accuracy of the various methods is measured. Sample programs for the 87C51 family are presented at the end of the article.

Measure resistance and capacitance without an A/D

The old "one-shot" monostable multivibrator circuit has been around since the discovery of the electron. Popular IC versions of this variable pulse width generator include the 74123 and the famous (Philips) Signetics NE555 timer. These circuits use the time to charge a capacitor to a predefined voltage as their time delay.

Measure resistance and capacitance without an AD

If the threshold voltage is 1-1/e (e is the natural log base), then the time delay in seconds is exactly the product of the resistance in ohms and the capacitance in Farads (t=RC). This is a linear equation and it can be used to measure an unknown value of R if C and t are known. The purpose of this article is to describe ways to measure a RESISTANCE by using this technique with an 80C51 type of microcontroller.

by Don Sherman AN449 - NXP Philips Application Notes


Basic Electronics
Basics of Electronics
Product Production
Work Discipline
Testing Points
Learning Electronics
Electronics Theory

Production Notes
Prototype Fabrication
Electrical Circuits

Scots Guide Electronics
Engineering - Wikibooks
Design Lab - Jim Svoboda
DC Circuits UOG
Socratic Electronics
Blobz Guide Electric Circuits

Product Design
Product Development
Constant Current Source
Good Voltage Regulators
Insulation Resistance
Digital Insulation Tester
DN Schematic PCB 04
DN Product Design 07

Hobby Circuits
VU Meter Circuits
LED brightness control
555 Incredible Chip
Process Control
liquid level measurement
Thermocouples and RTD
Design ADC Interface uC
Thermocouple Amplifier
IA Instrumentation 02
Temperature on DMM
Optical Proximity Switch
Analog Mux - Data Acquisition

Test Measurement
Instrumentation Automation
NI Test and Measurement
DMM Digital Multi Meter
Oscilloscope in T&M
IA Automation 01
Build Instruments
Tektronix T&M Equipment
Educators Corner – Agilent

Power Electronics
UPS Background
Transformer Connections
DN Power Electronics 03
DN Power Electronics 02
Half Bridge Convertor SG3525

Interfacing Microcontrollers
Embedded Process Control
80C31 8052 Microcontroller
Microprocessors and uC
Embedded Systems Design

Good Voltage Regulators
Relays and Contactors
Potentiometers Trimpots
Prototype Boards Types
Types of Capacitors
Types of Switches
Resistors How they Work
Coils Transformers SMPS
Mains Transformers Types
DN Components Selection 05

Tutor Gadgets
Count-Up Timer
Digital Logic Gates
Electronics Tutors

Teaching Instruments
Charles Proteus Steinmetz
Muntzing a Circuit Design
Teralab Electronics projects
Historical Instruments

Tables, Charts, Videos
Binary and Hex
Resistor Color Code
Ohms Law
Giga, Tera, Pico, Nano
High Resistance Materials

School - Analog Design
DN Analog Basics 06
DN Op-Amps 01
TI Semiconductors