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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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METER (ELECTRONIC) sa AMMETER sa AUDIO POWER METER sa DECIBEL METER (ELECTRONIC) sa DIGITAL DISPLAY sa DWELL METER/TACHOMETER sa ELECTRIC POWER-CONSUMPTION MONITOR sa FIELD STRENGTH METER sa FREQUENCY COUNTER sa GALVANOMETER sa GRID DIP METER sa LIGHT EMITTING DIODE DISPLAY sa LIQUID CRYSTAL DISPLAY sa OHMMETER sa PH METER sa SIGNAL STRENGTH METER sa STANDING-WAVE RATIO METER sa VOLTMETER & MULTIMETER sa VOLUME UNIT METER sa WATTMETER sa WAVEMETER x ANALOG DISPLAY x DISPLAY (ANALOG) xx ELECTRONIC COMPONENT xx ELECTRONIC TESTING Tip on adjusting the setscrew inside a panel meter. Adapting surplus meters to your circuit. How to modify the operating range using a meter shunt and/or multiplier. Tip on making a new scale card for a surplus analog meter. A multi-tone intermodulation meter. Part 1. An overview of audio measurements, linear and nonlinear distortion, static distortion, dynamic distortion, etc. A multi-tone intermodulation meter. Part 2. Construction and use. A multi-tone intermodulation meter. Part 3. Measuring nonlinear distortions. Applying the IM (intermodulation) meter measurements to existing amplifiers and proposed improvements to amplifier design. Antenna null meter replaces an s.w.r. bridge, coax switch, and dummy load. It provides a quicker means of adjusting an antenna tuner. Tip on using inexpensive FM tuning meters or surplus S-meters in place of DC meters. Customized analog meter faces can be produced using your PC, a laser printer that understands Hewlett-Packard Graphics Language (HPGL), and the BASIC language program and techniques presented in this article. RF output meter for $5. Stop that RF leak and around meters. Edgewise panel meters, housed in clear plastic, can have neon lamps added to serve as pilot lights. Build a direct-reading wow and flutter meter. Used to measure distortion caused by out-of-round phonograph or tape player components. Part 1. Build a direct-reading wow and flutter meter. Part 2. Customize analog meter faces with your PC and a laser printer. Includes a BASIC program. Diode meter protectors. How much protection and effects on accuracy. The inside story of meters and shunts. Tips on converting meters to measure different ranges than they were designed to measure. How to make custom scales for meters. Simple AM modilation meter requires no connection to the transmitter. Basic course in electricity and electronics. How to measure electricity. Different types of meters and how to use them to measure voltage and current. Peak reading level meter using indicator tubes. A primer and application for "magic-eye" tubes which are well-suited for fast, accurate level meters for monitoring tape recordings or power amplifier output levels. Selection and repair of "bargain table" electronic items. Tips on troubleshooting electronic calculators, radios, meters, etc. How to make professional looking meter scales. Tips on converting almost any D'Arsonval meter movement to suit virtually any current or voltage requirement through the addition of shunts, multipliers, and new meter scales. Power and impedance meter reads maximum output of amplifiers, signal generators, and low-power transmitters. Use "magic eye" indicator tube to replace expensive meters in monitoring devices such as this signal monitor for CB, ham and audiophile. Est. cost: $15. A null meter amplifier circuit. This circuit helps obtain sharp nulls when measuring low resistance values on an impedance bridge. LED bargraph readouts. Measure voltage, resistance and frequency with a row of lights which show trends (direction) better than meters with needles and less expensively than digital readouts. Circuits for several types of meters shown. Simple circuit to determine the internal resistance of a meter. Tip: Remove scratches from plastic meter faces, bezels and dial windows by polishing with cigarette ashes. A solid-state panel meter. Combining a dot-bar driver chip and a row of LEDs in one module provides a low-cost, solid-state meter. How to connect the NSM3915 as a logarithmic readout. Increase your analog meter's range by adding the right shunt to your meter's circuit. Meter tester uses switches and resistors to provide a number of current ranges. Allows you to test most surplus meters without damaging their sensitive movements. Calibrating surplus analog meters. Simple circuits and techniques. (1) Meter-range tester. (2) Determining meter resistance. (3) Shunt resistance. (4) Range multiplier. (5) Higher-current shunt. Duty cycle meter circuit displays the duty cycle of a pulse train (from 0% to 100%) on a standard analog panel meter. Saltmeter is used to measure the salt content of foods by measuring the amount of conductivity and displaying the results on a microammeter. Est. cost: $30. Tip: How to shield meters from stray RF (radio frequency) energy. How to change the full-scale reading of a DC panel meter. Trouble tone alert. Audio alarm circuit monitors an analog test meter. Whenever the meter moves up, the alarm sounds. Use it to help trace intermittent problems in electronic circuits. New dot and bar-graph display driver ICs. How they work and typical circuits for audio-level meters, expanded-scale voltmeter, and similar meters. An in-line, peak-indicating modulation meter designed especially for CB and ham radios. Features built-in calibration for carrier-to-modulation. Build a large-size accurate model of a moving coil meter and learn exactly how they work. | |||||||||
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