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Ray Marston

Ray's Articles

Security Electronics Systems And Circuits — Part 4
May 1998
Optoelectronic security circuits. Part 4

LED Chaser/Sequencer Circuits
April 2000
The LED chaser or sequencer is one of the most popular types of LED-driving circuits and is widely used in advertising displays and in running-light ‘rope’ displays.

Practical LED Indicator And Flasher Circuits
March 2000
The most widely used of all optoelectronic devices is the simple LED (light emitting diode). Here is a presentation of a variety of indicator and flasher circuits using LEDs.

THE ‘OPTO’ IN OPTOELECTRONICS — Part 4
June 1999
The basic operating principles of LEDs and lasers in this final episode of the series. Part 4

THE ‘OPTO’ IN OPTOELECTRONICS — Part 3
May 1999
The basic nature and behavior of fiber optic cables and communication systems. Part 3

THE ‘OPTO’ IN OPTOELECTRONICS — Part 2
April 1999
The basic nature and behavior of optical prisms and lenses. Part 2

THE ‘OPTO’ IN OPTOELECTRONICS — Part 1
March 1999
This first of four episodes on Optoelectronics deals with the basic nature and behavior of light, and with mirrors.

LED ‘Graph’ Circuits
September 2000
One of the most popular types of multi-LED indicator circuits is the so called analog-value indicator or ‘graph’ display. Here is a variety of practical LED dot-graph and bar-graph analog-value display circuits.

DC Voltage Converter Circuits
January 1998
DC voltage converter operating principles — Plus a selection of practical application circuits.

Using Seven-Segment Displays — Part 2
June 2001
Seven-segment decoder/driver ICs in the final part of this special feature article. Part 2

Using Seven-Segment Displays — Part 1
May 2001
A special two-part feature on how to use seven-segment alphanumeric displays. Part 1

Security Electronics Systems And Circuits — Part 10
November 1998
Add-on automobile security circuits. Part 10

Security Electronics Systems And Circuits — Part 9
October 1998
Security circuits that react to liquid, steam, gas, sound, power failure, proximity, touch, ultrasonics. Part 9

Security Electronics Systems And Circuits — Part 8
September 1998
Security circuits that react to temperature, voltage, current, or resistance. Part 8

Security Electronics Systems And Circuits — Part 7
August 1998
Practical Build-It-Yourself Anti-Burglary Circuits. Part 7

Security Electronics Systems And Circuits — Part 5
June 1998
Optoelectronic security circuits. Part 5

Security Electronics Systems And Circuits — Part 3
April 1998
Contact-operated security circuits. Part 3

Security Electronics Systems And Circuits — Part 2
March 1998
Electronic sensor devices, various types of data links, and alarm response units. Part 2

Security Electronics Systems And Circuits — Part 1
February 1998
Electronic security system basic principles. Part 1

Light-Sensitive Circuits
January 2000
Basic operating principles and applications of light-sensitive devices.

‘555’ Astable Circuits
December 2000
Using the ‘555 timer IC’ in a variety of useful astable multivibrator or squarewave generator applications.

‘555’ Monostable Circuits
November 2000
555 timer IC basics and ways of using it in monostable applications.

Using The “555” Timer IC In ‘Special’ Or Unusual Circuits
October 2000
Use the ‘555 timer IC’ in unusual applications such as Schmitt triggers, astable gadgets, alarms, and long-period timers.

OP-AMP COOKBOOK — Part 4
October 2001
Instrumentation and Test Gear Circuits Part 4

OP-AMP COOKBOOK — Part 3
September 2001
Oscillators and Switching Circuits Part 3

OP-AMP COOKBOOK — Part 2
August 2001
Op-Amp Basics: Amplifiers and Active Filters Part 2

OP-AMP COOKBOOK — Part 1
July 2001
Op-amp principles and basic circuit configurations. Part 1

Optocoupler Circuits
February 2000
Operating principles and practical applications of a variety of optocoupler devices.

Triac Principles and Circuits — Part 2
March 2002
Optocoupled synchronous power switching, plus other triac-related circuits and information. Part 2

Triac Principles and Circuits — Part 1
February 2002
Basic triac principles and practical circuits. Part 1

SCR Principles And Circuits
January 2002
Basic SCR principles and practical circuits.

FET Principles And Circuits — Part 4
August 2000
Practical VMOS power FET circuits and appplications. Part 4 of 4

FET Principles And Circuits — Part 3
July 2000
Practical MOSFET and CMOS circuits. Part 3 of 4

FET Principles And Circuits — Part 2
June 2000
Practical JFET circuits. Part 2 of 4

FET Principles And Circuits — Part 1
May 2000
FET (Field-Effect Transistor) basics. Part 1 of 4

BIPOLAR TRANSISTOR COOKBOOK — PART 8
February 2004
A miscellaneous collection of useful transistor circuits and gadgets in this final episode. Part 8 of 8

BIPOLAR TRANSISTOR COOKBOOK — PART 7
January 2004
Practical transistor audio power amplifier and 'accessory' circuits. Part 7 of 8

BIPOLAR TRANSISTOR COOKBOOK — PART 6
December 2003
Practical multivibrator types of waveform generator circuits. Part 6 of 8

BIPOLAR TRANSISTOR COOKBOOK — PART 5
November 2003
Practical oscillator and white noise waveform generator circuits. Part 5 of 8

BIPOLAR TRANSISTOR COOKBOOK — PART 3
September 2003
Practical common-emitter and common-base amplifier circuits. Part 3 of 8

BIPOLAR TRANSISTOR COOKBOOK — PART 2
August 2003
A variety of practical common-collector amplifier circuits. Part 2 of 8

BIPOLAR TRANSISTOR COOKBOOK — PART 1
July 2003
Bipolar transistor principles and basic circuit configurations. Part 1 of 8

Using The 4007UB CMOS Digital IC
December 2005
Ray Marston takes a detailed look at the 4007UB CMOS IC and explains how it can be used in a wide range of useful digital and analog applications. If you are unfamiliar with modern CMOS, the very best way to learn about it is by experimenting with the inexpensive 4007UB IC.

Understanding Digital Logic ICs - Part 2
August 2006
A deeper look at the ‘74’-series of digital ICs, and at various sub-members of its TTL and CMOS families. Part 2

Understanding Digital Logic ICs - Part 4
October 2006
A close look at the popular ‘4000’- and ‘74’-series of modern CMOS digital ICs and at CMOS basic usage rules in this final installment. Part 4

Understanding Digital Buffer, Gate, and Logic IC Circuits - Part 1
April 2007
Logic gate basics and a detailed look at practical TTL and CMOS digital buffer IC circuits. Part 1

Understanding Digital Buffer, Gate, and Logic IC Circuits - Part 2
May 2007
Practical digital inverter and AND gate logic ICs. Part 2

Understanding Digital Buffer, Gate, and Logic IC Circuits - Part 3
June 2007
Practical digital NAND gate and OR gate logic ICs. Part 3

Understanding Digital Buffer, Gate, and Logic IC Circuits - Part 4
July 2007
Practical digital NOR gate, EX-OR gate, and EX-NOR gate logic ICs. Part 4

Understanding Digital Buffer, Gate, and Logic IC Circuits - Part 5
August 2007
Practical digital mixed gate and special-purpose logic gate ICs such as programmable logic, majority logic, and digital transmission gate types. Part 5

BIPOLAR TRANSISTOR COOKBOOK — PART 4
October 2003
A variety of practical small-signal audio amplifier circuits in this edition. Part 4 of 8

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