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.

Meter circuit for Dynaco Mark III and Stereo 70 amplifier is used to monitor the current from the 1.56-volt test point.
AUDIO AMATEUR 3/1977 [Aug 1977] (v.8#3) pg. 40
Added Info AUDIO AMATEUR 4/1978 [Nov 1978] (v.9#4) pg. 47

Modification to improve the usefulness of the meters on SWTPC (Southwest Technical Products) 207-A power amplifiers.
AUDIO AMATEUR 4/1977 [Dec 1977] (v.8#4) pg. 44
Correction AUDIO AMATEUR 1/1978 [Mar 1978] (v.9#1) pg. 63
Added Info AUDIO AMATEUR 4/1983 [Nov 1983] (v.14#4) pg. 29

Information on constructing the audio power meter which appeared in POPULAR ELECTRONICS magazine (May 1976).
AUDIO AMATEUR 2/1978 [Jun 1978] (v.9#2) pg. 53

Power meter. This peak-reading audio power meter project uses LED's as fast indicators of amplifier power level.
AUDIO AMATEUR 4/1979 [Oct 1979] (v.10#4) pg. 23
Correction AUDIO AMATEUR 2/1980 [Mar 1980] (v.11#2) pg. 46
Added Info AUDIO AMATEUR 1/1981 [Feb 1981] (v.12#1) pg. 51
Added Info AUDIO AMATEUR 2/1981 [Apr 1981] (v.12#2) pg. 58
Added Info AUDIO AMATEUR 1/1982 [Jan 1982] (v.13#1) pg. 53

A ladder circuit produces a series of reference voltages separated by 3dB increments. Useful as part of a digital VU or power level meter using LED's for display.
AUDIO AMATEUR 4/1979 [Oct 1979] (v.10#4) pg. 40

A dynamic range and clipping indicator uses LED's to display the results. The unit combines electronic crossovers with circuit-board versions of dynamic range/clipping indicators.
AUDIO AMATEUR 1/1980 [Jan 1980] (v.11#1) pg. 14

LED lengthener. Circuit to keep an LED audio power meter display lighted long enough for the eye to detect, even though the trigger pulse may have have been of very short duration.
AUDIO AMATEUR 2/1980 [Mar 1980] (v.11#2) pg. 34

A high performance audio power meter. Principles and construction of an LED meter for monitoring amplifier output or line level. Features high speed and wide bandwidth.
AUDIO AMATEUR 1/1988 [Feb 1988] (v.19#1) pg. 19

Review of the Advantage Model 310 audio signal and noise level meter.
AUDIO AMATEUR 3/1994 [Sep 1994] (v.25#3) pg. 38

Audio power meter uses all analog components, including a d'Arsonval meter movement. With a little redesign you can make it a true RMS audio voltmeter. Est. cost: $105.
AUDIO ELECTRONICS 3/2000 [May 2000] (v.31#3) pg. 6
Added Info AUDIO ELECTRONICS 4/2000 [Jul 2000] (v.31#4) pg. 47

Audio meter for the TRS-80 cassette recorder displays the recording and playback audio levels.
BYTE Feb 1980 (v.5#2) pg. 172

How to build and use an audio milliwatt meter. Used to measure internally generated receiver noise and the minimum discernible signal (MDS) which a receiver will detect. Est. cost: $10.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1991 (v.47#1) pg. 40

Direct-reading amplifier output power meter goes to 100 watts for 8- or 16-ohm loads and 50 watts for 4-ohm load.
ELECTRONICS ILLUSTRATED Nov 1971 (v.14#6) pg. 63

Build a true stereo peak reading audio meter to make high quality tape recordings.
ELEMENTARY ELECTRONICS Nov-Dec 1975 (v.15#6) pg. 73

Audio powermeter measures audio amplifier output power up to 50 watts at 8 ohms. Schematic and parts list.
ELEMENTARY ELECTRONICS Jan-Feb 1978 (v.18#1) pg. 34

Stereo power and balance meter uses lighted LED's to set the balance control for equalized outputs, and will alert you if there is a degradation of power due to a malfunction of the amplifier.
ELEMENTARY ELECTRONICS Jan-Feb 1980 (v.20#1) pg. 25

Stereo power meter incorporates the LM3914 Dot/Bar display-driver integrated-circuit to display the power going through each channel. Est. cost: $35.
HANDS-ON ELECTRONICS Winter 1985 (v.2#3) pg. 31

Two-band stereo LED power meter lets you visually monitor your car stereo system's high- and low-frequency output power.
MODERN ELECTRONICS [2] Sep 1986 (v.3#9) pg. 36

Dress up audio projects with solid-state level indicators. Three different methods for adding LED level indicators to replace or supplement D'Arsonval (moving needle) analog meters.
POPTRONIX EXPERIMENTER HANDBOOK Summer 1997 pg. 22

Build an audio level meter. Adding multi ranges to a low-cost dB meter.
POPULAR ELECTRONICS [1] Dec 1972 (v.2#6) pg. 104

An LED-readout audio power meter measures amplifier output, indicates speaker balance, compares speaker efficiencies, and doubles as a VU meter with easy-to-read display. Est. cost: $38.
POPULAR ELECTRONICS [1] Mar 1976 (v.9#3) pg. 35
Correction POPULAR ELECTRONICS [1] May 1976 (v.9#5) pg. 6
Correction POPULAR ELECTRONICS [1] Jun 1976 (v.9#6) pg. 6
Added Info AUDIO AMATEUR 2/1978 [Jun 1978] (v.9#2) pg. 53

Audio power meter indicates an audio amplifier's true output power. Est. cost: $45.
POPULAR ELECTRONICS [1] Oct 1979 (v.16#4) pg. 62
Correction POPULAR ELECTRONICS [1] Nov 1979 (v.16#5) pg. 6

An audio level meter. Useful in tape recording, checking broadcast modulation, balancing channels, monitoring power amplifiers, etc. Est. cost: $75.
POPULAR ELECTRONICS [1] Oct 1981 (v.19#10) pg. 87

Build a power meter and stylus timer for your hi-fi system. It tells how many watts are getting to your speakers and how many hours your phonograph stylus has been tracking grooves.
POPULAR MECHANICS Nov 1981 (v.156#5) pg. 85

Build this audio power level meter. Help select correct output for speakers, protect speakers against damage, compare dynamic ranges of program sources, etc. Estimated cost: $42.
RADIO-ELECTRONICS Feb 1980 (v.51#2) pg. 43
Added Info RADIO-ELECTRONICS Sep 1980 (v.51#9) pg. 26

New dot and bar-graph display driver ICs. How they work and typical circuits for audio-level meters, expanded-scale voltmeter, and similar meters.
RADIO-ELECTRONICS Oct 1980 (v.51#10) pg. 96

Power meter for your stereo. Peak-reading power meter will also protect your loudspeakers from excessive wattage. Est. cost: $60.
RADIO-ELECTRONICS May 1985 (v.56#5) pg. 73
Added Info RADIO-ELECTRONICS Oct 1985 (v.56#10) pg. 22

An easy peak power indicator. This passive LED circuit is attached to speaker terminals and lights up when a certain power level is reached. Est. cost: $5.
SPEAKER BUILDER 1/1983 [Jun 1983] (v.4#1) pg. 26
Added Info SPEAKER BUILDER 2/1984 [Jun 1984] (v.5#2) pg. 17
Added Info SPEAKER BUILDER 1/1985 [Feb 1985] (v.6#1) pg. 40

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