Norman Lathrop Enterprises | Norman Lathrop Enterprises
Index To How To Do It Information
Lathrop Report On Newspaper Indexes
A profile of Norman Lathrop Enterprises
Last Updated
  Index Home  |   A-Z Subject Heading Guide    |   Keyword Search  |   Union List 

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.


Op amps for audio. Part 3. Regulated power circuits (RC filter, voltage regulator, power supply).
AUDIO AMATEUR 4/1974 [Apr 1975] (v.5#4) pg. 14
Correction AUDIO AMATEUR 2/1975 [Nov 1975] (v.6#2) pg. 38

Technique for selecting the zener components in a simple voltage stabilizer.
AUDIO AMATEUR 4/1979 [Oct 1979] (v.10#4) pg. 43

A high quality power supply (voltage) regulator for use with any IC operational amplifier audio preamplifier.
AUDIO AMATEUR 2/1980 [Mar 1980] (v.11#2) pg. 8
Correction AUDIO AMATEUR 4/1980 [Nov 1980] (v.11#4) pg. 63
Added Info AUDIO AMATEUR 1/1981 [Feb 1981] (v.12#1) pg. 10
Added Info AUDIO AMATEUR 2/1981 [Apr 1981] (v.12#2) pg. 58, 62
Correction AUDIO AMATEUR 3/1981 [Jun 1981] (v.12#3) pg. 48
Added Info AUDIO AMATEUR 3/1981 [Jun 1981] (v.12#3) pg. 54
Correction AUDIO AMATEUR 4/1985 [Oct 1985] (v.16#4) pg. 54
Added Info AUDIO AMATEUR 1/1986 [Feb 1986] (v.17#1) pg. 55, 57
Added Info AUDIO AMATEUR 2/1986 [May 1986] (v.17#2) pg. 49
Added Info AUDIO AMATEUR 1/1994 [Mar 1994] (v.25#1) pg. 36

A simple, rugged, dual-tracking voltage regulator circuit can supply from 5- to 30-volts (+/-).
AUDIO AMATEUR 2/1981 [Apr 1981] (v.12#2) pg. 49

Design for a high-voltage, low-impedance type voltage regulator that incorporates the Sulzer-type regulator.
AUDIO AMATEUR 1/1986 [Feb 1986] (v.17#1) pg. 55
Added Info AUDIO AMATEUR 3/1986 [Aug 1986] (v.17#3) pg. 56

Push-pull shunt regulator for an audio power supply. Provides a supply output of +/- 24V DC.
AUDIO AMATEUR 1/1988 [Feb 1988] (v.19#1) pg. 26
Added Info AUDIO AMATEUR 3/1988 [Aug 1988] (v.19#3) pg. 52
Added Info AUDIO AMATEUR 4/1988 [Oct 1988] (v.19#4) pg. 46
Added Info AUDIO AMATEUR 1/1989 [Feb 1989] (v.20#1) pg. 58

Parallel (shunt) voltage regulators for audio. Several practical circuits are included.
AUDIO AMATEUR 4/1990 [Oct 1990] (v.21#4) pg. 39
Correction AUDIO AMATEUR 1/1991 [Feb 1991] (v.22#1) pg. 55
Added Info AUDIO AMATEUR 3/1994 [Sep 1994] (v.25#3) pg. 44

Dual voltage-regulator module. A simple circuit module that allows you to easily plug in voltage regulation wherever you need it. As shown, the design handles up to 30V output, but can be modified for higher voltages.
AUDIO ELECTRONICS 6/2000 [Nov 2000] (v.31#6) pg. 12

Taming high line voltage. Circuit for a conditioner to output a consistent 115-116 volts AC.
AUDIOXPRESS Jan 2001 (v.32#1) pg. 119

No-feedback voltage regulators. Results of extensive work on regulator circuits to control output voltage.
AUDIOXPRESS Oct 2001 (v.32#10) pg. 40
Added Info AUDIOXPRESS May 2002 (v.33#5) pg. 68

A power-line protection circuit uses relays to provide some protection from wiring errors.
BYTE Mar 1980 (v.5#3) pg. 126
Correction BYTE Sep 1980 (v.5#9) pg. 96

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

Cyber Supply. Get precise volts from bench power supplies. Interface lets you digitally control a linear bench-type DC power supply to produce precise voltages in 100- or 50-millivolt increments (up to 2 amperes current). Est. cost: $70.
COMPUTERCRAFT Sep 1991 (v.1#6) pg. 36
Correction COMPUTERCRAFT Oct 1991 (v.1#7) pg. 6

Guard precious electronic components from overload damage by adding a single IC to the circuit. Several examples shown.
COMPUTERS & ELECTRONICS Jun 1983 (v.21#6) pg. 39

Use a positive or negative regulator to build any fixed or variable voltage regulator from 3 to 30 volts.
CQ. THE RADIO AMATEUR'S JOURNAL Aug 1979 (v.35#8) pg. 58

Voltage regulator circuit to power a Tempo S-1 from an external 13.8 v.d.c. source.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1981 (v.37#3) pg. 77

Simple line-voltage reducer is used to reduce 120-volts AC down to 111-volts AC. The lower voltage is more suitable for operating old electric equipment, such as vintage radios.
CQ. THE RADIO AMATEUR'S JOURNAL Oct 1990 (v.46#10) pg. 47

Step-down and step-up regulator circuits for obtaining as much useful power from a battery as possible.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1993 (v.49#3) pg. 102

Build an enlarger-lamp voltage controller for black-and-white photographic printing. Est. cost: $35.
DARKROOM PHOTOGRAPHY Jan-Feb 1988 (v.10#1) pg. 55

Circuit to control any 78xx series three-terminal voltage regulator using logic signals.
ELECTRONICS NOW Jul 1994 (v.65#7) pg. 12

Power supply regulation. Learn the strengths and weaknesses of the two principal off-line power supplies (linear-regulated and switching-regulated).
ELECTRONICS NOW Dec 1994 (v.65#12) pg. 69

Off-line linear voltage regulators. Includes instructions for building two miniature power supplies: (1) Adjustable DC output of 8 to 12 volts up to 100 milliamperes. (2) Precision 5-volt DC output.
ELECTRONICS NOW Apr 1995 (v.66#4) pg. 71
Added Info ELECTRONICS NOW Aug 1995 (v.66#8) pg. 12

Connecting a blinking red LED (such as Radio Shack's 276-036) directly to the output of a 7805 (or 78L05) voltage regulator.
ELECTRONICS NOW Jan 1996 (v.67#1) pg. 8

Fooling a voltage regulator IC into supplying a higher than specified output is easily done using Zeners or regular silicon diodes.
ELECTRONICS NOW Sep 1997 (v.68#9) pg. 9

Time-ratio control power regulator for mobile radio power supply. Developed by General Electric.
ELECTRONICS WORLD Oct 1966 (v.76#4) pg. 84

Voltage regulator for photographic enlarger lamp.
ELECTRONICS WORLD Sep 1969 (v.82#3) pg. 72

Voltage regulator design nomograms.
ELECTRONICS WORLD Aug 1970 (v.84#2) pg. 32

Circuit uses transistor base-emitter junctions in place of Zener diodes for voltage regulation.
ELECTRONICS WORLD Sep 1970 (v.84#3) pg. 90

Zener diode voltage-regulator nomograms simplify selection of components.
ELECTRONICS WORLD Jul 1971 (v.86#1) pg. 32

Basic operation and specifications of Zener diodes along with simple design technique for using them as shunt regulators.
ELECTRONICS WORLD Dec 1971 (v.86#6) pg. 32

Using zener diodes as voltage regulators.
ELEMENTARY ELECTRONICS Jul-Aug 1966 (v.2#3) pg. 77

A high quality vacuum tube voltage regulator. Build a prototype power supply that features a 250V feedback-type regulator.
GLASS AUDIO 2/1992 (v.4#2) pg. 24

Vacuum-tube regulator design. Circuits for regulators with 250-600V outputs which are varied over only a small range. The amount of current supplied can be any reasonable amount. Advice on choosing voltages and tubes.
GLASS AUDIO 3/1993 (v.5#3) pg. 16
Added Info GLASS AUDIO 2/1994 (v.6#2) pg. 44

Line voltage regulator. Tube regulator using feed forward to improve line regulation and reduce ripple.
GLASS AUDIO 4/1993 (v.5#4) pg. 37
Added Info GLASS AUDIO 4/1994 (v.6#4) pg. 52

Circuit for a positive feedback 100mA voltage regulator that is intended for preamplifiers or as a screen regulator for power amplifiers. Output voltage can be either 250 or 300 volts.
GLASS AUDIO 4/1996 (v.8#4) pg. 64
Added Info GLASS AUDIO 6/1996 (v.8#6) pg. 66
Correction GLASS AUDIO 3/1997 (v.9#3) pg. 54

Designing practical DC power supplies. Voltage-regulator circuits. Looks at three-terminal regulators, current regulators, output-current limiting, over-voltage protection, heat sinks, switching regulators, and inverter circuits.
HANDS-ON ELECTRONICS Fall 1984 (v.2#2) pg. 81

Overvoltage protector circuit for use with 12-volts DC.
HANDS-ON ELECTRONICS Mar 1987 (v.4#3) pg. 25

Schematic for a simple crowbar circuit which will detect an overvoltage situation and shut down the computer before any damage can be done.

How to use a LM317 voltage regulator IC to regulate the output of a portable battery pack.
MODERN ELECTRONICS [1] May 1978 (v.1#3) pg. 6

Schematic for a voltage regulation circuit to add to an inexpensive 14-volt power supply.
MODERN ELECTRONICS [1] Oct 1978 (v.1#8) pg. 6

Micro-power regulator circuit draws only 5 microamperes of standby power. In operation it can deliver up to 50 milliamperes to the output load. Add an external power transistor to boost output to 1 ampere.
MODERN ELECTRONICS [2] May 1985 (v.1#8) pg. 69

AC-to-DC conversion. How a power supply really works, regulators you can build, and a computer program to aid design.
MODERN ELECTRONICS [2] May 1986 (v.3#5) pg. 30
Correction MODERN ELECTRONICS [2] Sep 1986 (v.3#9) pg. 5
Added Info MODERN ELECTRONICS [2] Apr 1987 (v.4#4) pg. 91

The versatile LM723 precision voltage regulator IC. What it is, how it works, typical circuits, etc.
MODERN ELECTRONICS [2] Feb 1987 (v.4#2) pg. 18
Correction MODERN ELECTRONICS [2] Mar 1988 (v.5#3) pg. 7

Visual regulator monitor. Separate circuits with LEDs alert you to loss of regulation, overcurrent and thermal problems caused by regulator ICs in power supplies.
MODERN ELECTRONICS [2] Oct 1988 (v.5#10) pg. 52

Switching voltage-regulator ICs. Includes a circuit in which a +26-volt input is used to produce a + 5-volt output at 5 amperes.
MODERN ELECTRONICS [2] Dec 1988 (v.5#12) pg. 64

Designing a buck-boost voltage regulator.
MODERN ELECTRONICS [2] Jun 1990 (v.7#6) pg. 68

How to choose a voltage regulator for your photographic enlarger.
MODERN PHOTOGRAPHY Jun 1980 (v.44#6) pg. 10

Voltage-regulated battery power supply will furnish a constant 9-volt output and extend battery life well beyond "end-point" voltage. Whole unit fits into a plastic soap case.
POPULAR ELECTRONICS [1] Nov 1966 (v.25#5) pg. 85

Bendix circuit for a one-transistor voltage regulator. Has 10- to 14-volt input, with 8.6 +/-0.25 volt output.
POPULAR ELECTRONICS [1] Dec 1966 (v.25#6) pg. 75

Voltage regulator for a 45-55 volt input and a 28 volt at 0.5 ampere output.
POPULAR ELECTRONICS [1] Jun 1968 (v.28#6) pg. 60

Monitor circuit shunts excess voltage to a lamp.
POPULAR ELECTRONICS [1] Dec 1968 (v.29#6) pg. 71

Four building-block power supply circuits. Two transformer-rectifier units, a series regulator and a shunt regulator.
POPULAR ELECTRONICS [1] Feb 1969 (v.30#2) pg. 72

Power-line booster/reducer can provide a maximum addition and subtraction of 12 volts in 3-volt increments, starting at 6 volts. Used to protect sensitive instruments from AC power line fluctuations.
POPULAR ELECTRONICS [1] Oct 1972 (v.2#4) pg. 62

Put a Zener diode to work and design your own voltage regulators. Basic formulas and circuit for Zener control.
POPULAR ELECTRONICS [1] Apr 1973 (v.3#4) pg. 76

Circuit for an inexpensive voltage booster that will boost 110-volt ac power by 5.4% to compensate for the drop in line voltage at peak demand periods.
POPULAR ELECTRONICS [1] Mar 1975 (v.7#3) pg. 90

Power guard. Boost ac line voltage by 10 to 20 volts whenever the line voltage drops below 105 volts.
POPULAR ELECTRONICS [1] Jul 1975 (v.8#1) pg. 34

Circuit shows the common way of connecting a zener voltage regulator.
POPULAR ELECTRONICS [1] Jul 1976 (v.10#1) pg. 30

Simple circuit uses the "crowbar" technique to prevent more than 15-volts DC from getting to a mobile transceiver.
POPULAR ELECTRONICS [1] Jan 1977 (v.11#1) pg. 34

Typical circuits for integrated circuit voltage regulators for converting 110-volt ac power to low-voltage dc applications.
POPULAR ELECTRONICS [1] Oct 1977 (v.12#4) pg. 88

Add voltage regulation to a color photo enlarger. Will maintain dc voltage within 1% even if the ac line voltage varies up to 10%. Est. cost: $20.
POPULAR ELECTRONICS [1] Nov 1977 (v.12#5) pg. 63

Line-voltage compensator. A 6.3-volt transformer can be used to boost 117-volt AC line current by about 6-volts.
POPULAR ELECTRONICS [1] May 1979 (v.15#5) pg. 75

Protection circuit senses any sudden increase (or decrease) in power supply output voltage and automatically shuts off power supply to regulator.
POPULAR ELECTRONICS [1] Mar 1980 (v.17#3) pg. 74

The ferroresonant AC voltage regulator will smooth out power-line voltage variations. The unit employs a ferroresonant transformer and will handle loads up to 250 watts.
POPULAR ELECTRONICS [1] Jul 1980 (v.18#1) pg. 75

Build an automatic line voltage regulator that will raise 117-volt AC power-line voltage by six-volts whenever it drops below a preset level.
POPULAR ELECTRONICS [1] Mar 1981 (v.19#3) pg. 85

Circuit provides a regulated +12 volts to a battery powered radio even if the automobile voltage regulator should fail.
POPULAR ELECTRONICS [1] Nov 1981 (v.19#11) pg. 81

Circuit for a 5-volt regulator circuit which accepts 10-15 volt DC input.
POPULAR ELECTRONICS [1] Mar 1982 (v.20#3) pg. 101

Circuit for a power pulse generator which uses the LM150/250/350 adjustable voltage regulator.
POPULAR ELECTRONICS [1] Mar 1982 (v.20#3) pg. 112

Eliminate data loss. Simple circuit, usable with any microcomputer, will help prevent outages due to power line disturbances. R-F filter and surge arrestor will handle up to 80-watts. Est. cost: $8.
POPULAR ELECTRONICS [1] Apr 1982 (v.20#4) pg. 81

Choosing and using three-terminal voltage regulators. How they work, how they are used, and how to select the right one for a project. Includes several power supply circuits.
POPULAR ELECTRONICS [2] May 1990 (v.7#5) pg. 72

Adjustable voltage-regulator ICs. How they operate and typical applications.
POPULAR ELECTRONICS [2] Jul 1991 (v.8#7) pg. 20

Voltage regulator applications. (1) In-rush current limiter circuit keeps current at the rated operating level of the device to be protected. (2) Visible-light transmitter circuit. (3) Visible-light receiver circuit. (4) Using two common voltage regulators to vary both voltage and current. (5) Circuit to control a small DC motor or small lamp.
POPULAR ELECTRONICS [2] Mar 1992 (v.9#3) pg. 70

Simple single-transistor circuits. (1) Voltage regulator outputs 6-volts DC. (2) Constant-current output. (3) Simple audio amplifier. (4) Impedance-matching circuit. (5) LED-control circuits turn either off or on in the presence of a DC voltages from 5- to 9-volts. (6) Relay-driver circuit has a latching feature that keeps the relay on once energized.
POPULAR ELECTRONICS [2] Dec 1995 (v.12#12) pg. 77

Simple diode circuits. (1) Bridge rectifier. (2) Sound-level (audio signal) limiter circuit never exceeds 1.5-volts peak-to-peak. (3) DC polarity or AC indicator circuit. (4) Kick-back voltage limiter for inductive loads. (5) Steering circuit controls relays based on voltage polarity. (6) Simple temperature sensor. (7) Circuit for selecting matching diodes.
POPULAR ELECTRONICS [2] May 1996 (v.13#5) pg. 64

More diode circuits. (1) Clamping circuits for either the positive or negative portion of an AC signal. (2) Protective circuits prevent reverse-voltage damage. (3) Meter guard circuit limits maximum voltage that can reach a meter. (4) Noise generator and amplified noise generator circuit uses a Zener diode. (5) Circuit to monitor the symmetry of an AC waveform. (6) RF switching circuit, antenna switcher, and transceiver switch for connecting radio equipment to an antenna.
POPULAR ELECTRONICS [2] Jun 1996 (v.13#6) pg. 66
Correction POPULAR ELECTRONICS [2] Dec 1996 (v.13#12) pg. 6

Switchable regulator. Zener diodes, a rotary switch and common parts form a simple circuit to convert a 15-volt DC input into three or more fixed-voltage outputs.
POPULAR ELECTRONICS [2] Feb 1997 (v.14#2) pg. 76

Using zener diodes as voltage regulators.
POPULAR ELECTRONICS [2] Jun 1997 (v.14#6) pg. 68

Circuit to regulate the output from a solar panel to levels useful for low-voltage applications.
POPULAR ELECTRONICS [2] Dec 1997 (v.14#12) pg. 62

How to use adjustable or programmable DC power supply (voltage) regulators.
POPULAR ELECTRONICS [2] Feb 1998 (v.15#2) pg. 64

Power regulator for a photographic enlarger will keep power surges and dips from changing the exposure on photo prints. Est. cost: $25-$35.
POPULAR MECHANICS Nov 1968 (v.130#5) pg. 122

Build a switching-type voltage regulator which offers greater efficiency than conventional supplies. Lets you invert the output polarity or program the output for step-up or step-down. Estimated cost: $37.
RADIO-ELECTRONICS Feb 1980 (v.51#2) pg. 57
Correction RADIO-ELECTRONICS Jun 1980 (v.51#6) pg. 22

Tips on designing voltage regulators and power supplies.
RADIO-ELECTRONICS May 1983 (v.54#5) pg. 90

How to raise or lower the output voltage from a fixed-output voltage regulator.
RADIO-ELECTRONICS Jun 1983 (v.54#6) pg. 92

Typical applications for voltage regulator IC's are shown.
RADIO-ELECTRONICS Jun 1984 (v.55#6) pg. 92

All about power-supply circuits. An in-depth look at practical power supplies and voltage regulators.
RADIO-ELECTRONICS Jul 1984 (v.55#7) pg. 65
Correction RADIO-ELECTRONICS Jan 1985 (v.56#1) pg. 22, 25

Explanation of a "crowbar" circuit which monitors the output voltage of a regulated power supply.
RADIO-ELECTRONICS Jan 1988 (v.59#1) pg. 22
Correction RADIO-ELECTRONICS Apr 1988 (v.59#4) pg. 16

Simple switching regulator steps up two AA cells or drops down a 9-volt battery to give you a fixed +5-volt.
RADIO-ELECTRONICS Apr 1988 (v.59#4) pg. 74

Circuit to turn the 78XX family of regulators on and off using external logic from another device.
RADIO-ELECTRONICS Oct 1989 (v.60#10) pg. 13