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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

COMPUTER POWER SUPPLY
sa   UNINTERRUPTABLE POWER SUPPLY
xx   COMPUTER
xx   ELECTRIC POWER SUPPLY

Basic principles of computer power supply operation. Includes tips on selecting a supply for your computer.
BYTE Jan 1977 (v.2#1) pg. 42

Build a DC to DC converter. Several practical designs are described to give you from -15 to +15 volts from a standard +5 volt computer power source.
BYTE Oct 1978 (v.3#10) pg. 22

Calculating filter capacitor values for computer power supplies.
BYTE Apr 1980 (v.5#4) pg. 118
Correction BYTE Jul 1980 (v.5#7) pg. 228

A DC-to-DC converter produces a 25 mA bipolar source from a positive voltage.
BYTE May 1980 (v.5#5) pg. 20

Schematic for a power supply delivering +/- 12V at 500 mA and +5V at 350 mA.
BYTE Jan 1981 (v.6#1) pg. 284

Switching power supplies. An introduction.
BYTE Nov 1981 (v.6#11) pg. 36
Correction BYTE Feb 1982 (v.7#2) pg. 327

Power supply circuit for the SD Systems (Dallas, TX) Z80 Starter Kit. Included in an article which reviews the Z80 Starter System.
BYTE Jan 1982 (v.7#1) pg. 332

Tip: Small-value capacitors on the input and output of three-terminal regulators will prevent oscillation in the voltage level.
BYTE Jul 1983 (v.8#7) pg. 498

Lightning storm monitor with automatic computer disconnect. Alerts you to nearby electrical-storm activity, then automatically closes files, saves whatever is in RAM to disk, and powers down your computer. Can be expanded to also disconnect your modem from the phone line. Est. cost: $100. Part 1.
COMPUTERCRAFT Jun 1991 (v.1#3) pg. 18

Lightning storm monitor with automatic computer disconnect. Part 2. Telephone monitor accessory lets you turn on a computer from any telephone.
COMPUTERCRAFT Jul 1991 (v.1#4) pg. 42

Power-on and manual-reset circuits. How they operate and how to build them into digital and computer projects.
COMPUTERCRAFT Nov 1992 (v.2#11) pg. 58

Power supplies for microcomputers. How to custom design your own.
COMPUTERS & PROGRAMMING Sep-Oct 1981 (v.21#5) pg. 32

How to add a "fuel gauge" to your Radio Shack Model 100 lap computer to give you a visual indication of the state of the batteries in use. The "fuel gauge" is basically a voltmeter with a conversion program that correlates the battery voltage to the ampere-hour capacity of the batteries.
CQ. THE RADIO AMATEUR'S JOURNAL Apr 1987 (v.43#4) pg. 18

The power pincher. This device will monitor keyboard activity on an IBM-compatible personal computer. If no keys are pressed within a certain time limit, then the video display will be turned off. Est. cost: $45 (kit).
ELECTRONICS NOW May 1995 (v.66#5) pg. 43

Cooling a microcomputer. The use of fans and board spacing can be further aided by construction of the power supply preregulator circuit shown here.
ELEMENTARY ELECTRONICS Jan-Feb 1981 (v.21#1) pg. 67

Onboard computer. Tips on installing and using a Timex-Sinclair 1000 computer in the cockpit of an airplane to assist the pilot with navigation, calculations, etc. Includes a circuit for converting the 14-volt aircraft electrical system to power the computer.
HOMEBUILT AIRCRAFT Mar 1985 (v.12#3) pg. 56

Power-down modification for the TRS-80 allows a single-switch on/off power control to turn off all power, including the power supply which normally stays on.
KILOBAUD MICROCOMPUTING #16 Apr 1978 pg. 114

Expand your KIM-1 system. Artwork for an expansion board and schematic for an expansion power supply. Also illustrated is a new enclosure for your KIM, consisting of a wooden briefcase which makes the unit more portable.
KILOBAUD MICROCOMPUTING #21 Sep 1978 pg. 58

How to expand your KIM-1 system economically. How to interface the KIM to a video monitor and an ASCII keyboard, add more memory, add a cassette tape recorder, and add a power supply. Both hardware and software are described.
KILOBAUD MICROCOMPUTING #22 Oct 1978 pg. 26

Schematic for a simple crowbar circuit which will detect an overvoltage situation and shut down the computer before any damage can be done.
KILOBAUD MICROCOMPUTING #22 Oct 1978 pg. 89

How to modify a TRS-80 power pack to eliminate transformer "buzz" and make the fuse holder more accessible.
KILOBAUD MICROCOMPUTING #26 Feb 1979 pg. 140

Some thoughts on the SWTP computer system. Part 1. Using ultraviolet light to erase EPROMS, correcting power supply problems, information on the 32K memory board, a fix so the RESET signal always gets through, increasing the baud rate, and a description of the new motherboard.
KILOBAUD MICROCOMPUTING #27 Mar 1979 pg. 60

Reduce power supply requirements for dynamic memory when utilizing the Z-80 internal refresh.
KILOBAUD MICROCOMPUTING #39 Mar 1980 pg. 101

Build a nicely styled wooden cabinet for your OSI Superboard II computer. Cabinet has a built-in power supply (schematic shown).
KILOBAUD MICROCOMPUTING #40 Apr 1980 pg. 202

Easy-to-build, two-transformer power supply delivers +5 volts (3 amperes) and voltages of +12, -12, -9, and -5 by means of zener diodes. Estimated cost: $40.
KILOBAUD MICROCOMPUTING #40 Apr 1980 pg. 216

Thoughts on the SWTP computer system. Serial port handshaking, abort switch, power supply modifications, Percom video board driver software, etc.
KILOBAUD MICROCOMPUTING #49 Jan 1981 (v.5#1) pg. 82

Atari XL/XE power supplies. Exploring similarities and differences of the four major types of XL/XE power supplies and how you can repair them.
MODERN ELECTRONICS [2] May 1986 (v.3#5) pg. 46

How to design and build power supplies. Part 1. Basics of transformers, rectifiers, filters, voltage regulators and protection circuits.
POPULAR ELECTRONICS [1] Apr 1978 (v.13#4) pg. 41
Correction POPULAR ELECTRONICS [1] Jul 1978 (v.14#1) pg. 6

How to design and build power supplies. Part 2. Some typical circuits including (1) 8-volt, 15-ampere for S-100 computer bus, (2) 5-volt, 4-ampere regulated supply, (3) 12-volt, 1-ampere supply and (4) 5-volt, 10-ampere supply.
POPULAR ELECTRONICS [1] May 1978 (v.13#5) pg. 61

An integrated polarity converter. A look at the Intersil ICL 7660 voltage polarity converter chip which generates a negative voltage from a positive input voltage. May become a standard feature in computer power supplies.
POPULAR ELECTRONICS [1] Sep 1980 (v.18#3) pg. 112

Replacing the ventilating fan in your PC power supply. Some tips.
POPULAR ELECTRONICS [2] Apr 1989 (v.6#4) pg. 68

Floppy/hard drive wiring tester. Circuit for a tester to check power supply connectors for correct voltage and polarity before installing the disk drive.
POPULAR ELECTRONICS [2] Jun 1990 (v.7#6) pg. 26

Tester is designed for IBM-type switching power supplies.
POPULAR ELECTRONICS [2] Oct 1990 (v.7#10) pg. 24

All about hobby computer power supplies. The story of high-current power supply regulation and how you can design and build your own computer power supply.
RADIO-ELECTRONICS Dec 1978 (v.49#12) pg. 56