| Parent directory/ | - | - |
| Digital Strobe to Measure RPM.pdf | 8.0 MiB | 2023-Jul-03 21:24 |
| Old School Instruments and Accessories.pdf | 7.7 MiB | 2022-Feb-25 21:29 |
| Electroscopes & Geiger Counters.pdf | 6.5 MiB | 2020-Mar-18 18:04 |
| Build a Seismograph Part 1 ETT 1989-12.pdf | 5.8 MiB | 2020-Jul-26 19:25 |
| Multiple Test Point Monitor.pdf | 5.4 MiB | 2020-Mar-18 18:01 |
| Measuring Large Currents.pdf | 4.7 MiB | 2020-Feb-07 00:14 |
| Digital Insulation Tester (Requires firmware download that may not be available).pdf | 4.5 MiB | 2024-Jan-11 21:03 |
| Sure Luck Ohms - Resistor Value Identifier.pdf | 4.3 MiB | 2020-Aug-28 21:24 |
| Utlilty Amplifier-Supply for the experimenter's bench.pdf | 4.2 MiB | 2023-Nov-16 20:13 |
| Continuity Tester (3).pdf | 3.8 MiB | 2020-Jun-08 15:41 |
| Continuity Tester (4).pdf | 3.8 MiB | 2020-Aug-25 16:31 |
| Measurement and Control Circuits Collection.pdf | 3.7 MiB | 2020-Mar-12 23:51 |
| Temperature Adapter for Multimeter ETI 153.pdf | 3.7 MiB | 2023-Sep-26 18:43 |
| Climate Logger.pdf | 3.6 MiB | 2020-Jul-21 17:09 |
| Electric Fence Tester ETI 1512.pdf | 3.5 MiB | 2023-Apr-05 20:37 |
| Intelligent Cable Tester.pdf | 3.5 MiB | 2004-May-26 02:00 |
| Making a Wheatstone Bridge.pdf | 3.4 MiB | 2020-Jul-03 16:21 |
| Electroscope.pdf | 3.4 MiB | 2023-Dec-20 00:25 |
| Microwave Oven Analyzer.pdf | 3.1 MiB | 2020-Feb-07 00:49 |
| Cable Reflection Tester.pdf | 3.0 MiB | 2020-Feb-08 13:40 |
| Capacitance Substitution Box.pdf | 3.0 MiB | 2020-Feb-15 20:24 |
| Cable Tester ETI559.pdf | 2.9 MiB | 2023-Jun-18 16:26 |
| Solar Dosimeter.pdf | 2.6 MiB | 2020-Aug-14 14:46 |
| MEASURING MAGNETIC FIELDS.pdf | 2.4 MiB | 2022-Apr-13 20:19 |
| Anemometer.pdf | 2.2 MiB | 2020-May-19 23:21 |
| Radiation Monitor.pdf | 2.0 MiB | 2010-Jan-03 22:56 |
| Load-transient-response for voltage regulators.pdf | 2.0 MiB | 2023-Aug-15 20:13 |
| Crystal Controlled Gate Dip Meter.pdf | 2.0 MiB | 2024-Feb-29 23:10 |
| Accuracy Tester for Mechanical Watches.pdf | 1.7 MiB | 2023-Aug-12 19:01 |
| Digital Clock and Thermometer.pdf | 1.6 MiB | 2020-Aug-26 20:33 |
| Pipe and Cable Locator.pdf | 1.6 MiB | 2020-Jul-17 18:09 |
| TIME -FREQUENCY MEASURING SYSTEM Part 2 73 1973-02.pdf | 1.5 MiB | 2023-Nov-30 18:39 |
| Lampkin 205A Deviation Meter.pdf | 1.5 MiB | 2020-Jul-26 17:11 |
| Measuring Nanoamperes.pdf | 1.4 MiB | 2009-Sep-26 21:13 |
| Geiger Counter.pdf | 1.4 MiB | 2020-Jul-17 18:09 |
| Opacity Measurement.pdf | 1.3 MiB | 2023-Nov-03 22:15 |
| R&C Substitution Boxes.pdf | 1.3 MiB | 2020-Sep-29 22:27 |
| Mini-Metrology Lab.pdf | 1.2 MiB | 2004-May-26 02:00 |
| Time Voltage Calibrator.pdf | 1.2 MiB | 2009-Jul-20 23:39 |
| Simple Test Circuits.pdf | 1.2 MiB | 2020-Aug-17 19:33 |
| Utility Amplifier - Lab Power Supply.pdf | 1.2 MiB | 2023-Sep-29 18:20 |
| Designing Instrumentation Circuitry with RMS-DC Converters.pdf | 1.1 MiB | 2011-Mar-28 20:54 |
| Using Tune Up Instruments.zip | 1.1 MiB | 2004-Jun-07 02:00 |
| Gigaohm Decade Resistance Box.pdf | 1.1 MiB | 2024-Jan-06 20:48 |
| Measuring relative humidity.pdf | 1.1 MiB | 2020-Dec-26 20:14 |
| Ultrasonic Listener.pdf | 1.0 MiB | 2020-Apr-29 17:57 |
| Capacitive Liquid Level Measurement.pdf | 1.0 MiB | 2023-Nov-01 18:39 |
| Circuits Designed for a Cruel and Unyielding World.pdf | 1.0 MiB | 2016-May-04 18:02 |
| Dip Switches To Isolate Faults In A System.pdf | 1.0 MiB | 2004-May-26 02:00 |
| Making Use of Audio Indicators.pdf | 996.6 KiB | 2023-Nov-06 17:01 |
| Design a 100A Active Load to Test Power Supplies.pdf | 944.6 KiB | 2022-Nov-11 21:11 |
| Using Conductance to Check Out Electronic Components.pdf | 878.4 KiB | 2009-Nov-29 02:20 |
| Quicktracer.zip | 863.9 KiB | 2004-May-26 02:00 |
| Mains Cable Seeker.pdf | 835.0 KiB | 2020-Aug-08 23:20 |
| Indicators for All Occasions.pdf | 805.0 KiB | 2020-Feb-23 17:44 |
| Simple LED Mains Tester.pdf | 799.1 KiB | 2023-Jul-07 21:48 |
| Test Unit for Sequential Logic.pdf | 797.9 KiB | 2023-Jul-08 23:04 |
| Auto Service Meter.pdf | 787.3 KiB | 2024-Jan-06 00:58 |
| A Practical Gain Set.pdf | 754.1 KiB | 2023-Nov-08 22:08 |
| Digital Wind Speed Meter.pdf | 753.1 KiB | 2002-Mar-15 23:58 |
| Motor Speed Measurement Circuit.pdf | 734.8 KiB | 2018-Feb-02 19:00 |
| Radon Monitor Part 2.pdf | 733.8 KiB | 2003-Nov-16 02:29 |
| Relative Humidity Gauge.pdf | 732.4 KiB | 2020-Mar-08 19:45 |
| Resistance Decade Box (2).pdf | 721.6 KiB | 2022-Nov-22 18:53 |
| Digital Phototachometer.pdf | 702.9 KiB | 2020-Jul-05 22:55 |
| Thermocouple interface to micrcontroller.pdf | 672.6 KiB | 2022-Oct-22 15:30 |
| Digital Pressure Gauge.pdf | 671.7 KiB | 2009-May-23 00:25 |
| Power Supply Tester.pdf | 658.9 KiB | 2018-Jun-29 17:09 |
| Locate Faults In Coaxial Cables.pdf | 616.3 KiB | 2004-May-26 02:00 |
| Differential Audio Distortion Analyzer.pdf | 584.7 KiB | 2004-May-26 02:00 |
| Pola Testers.pdf | 566.1 KiB | 2009-Jun-22 23:15 |
| ICs for Test Instriments.pdf | 564.3 KiB | 2023-Nov-18 17:42 |
| Continuity Tester (5).pdf | 552.5 KiB | 2023-Sep-05 22:42 |
| Telco In A Box.pdf | 548.0 KiB | 2004-May-26 02:00 |
| Environmental Test Chamber.pdf | 528.1 KiB | 2009-May-25 21:42 |
| Digital IC Breadboard.pdf | 521.1 KiB | 2009-May-31 23:28 |
| Magnetic Field Sensors.pdf | 493.4 KiB | 2022-Jul-29 20:05 |
| Temperature Indicator.pdf | 486.8 KiB | 2024-Jan-07 22:14 |
| Resistance Bridge.pdf | 473.8 KiB | 2022-Nov-22 18:51 |
| Magnetometer.pdf | 470.7 KiB | 2022-Nov-11 21:24 |
| V & I Calibrator.pdf | 468.3 KiB | 2023-Nov-01 18:40 |
| Voltage & Continuity Tester.pdf | 463.5 KiB | 2022-Feb-21 00:11 |
| Zero Marking of AC Waveforms.pdf | 459.0 KiB | 2020-Dec-03 19:22 |
| Infrared Remote Tester.pdf | 450.4 KiB | 2020-Jul-25 20:20 |
| Versatile Tester with Audio Indication.pdf | 433.2 KiB | 2023-Nov-20 21:43 |
| Resistor Bank.pdf | 430.4 KiB | 2023-Dec-18 16:28 |
| Low Cost Weigh Scales.pdf | 426.3 KiB | 2020-Jan-13 18:29 |
| RF Exposure Test Methods.pdf | 399.5 KiB | 2009-Sep-11 21:42 |
| Magnetic Field Detector.pdf | 397.6 KiB | 2022-Jul-15 22:26 |
| Piezoelectric driver finds buzzer's resonant Frequency.pdf | 357.8 KiB | 2023-Oct-07 20:59 |
| Simple Impedance Bridge.pdf | 344.1 KiB | 2023-Sep-20 16:48 |
| Fraser Technologies Ltd Applause Meter.pdf | 329.2 KiB | 2017-Apr-16 14:28 |
| Measuring Insulation Resistance.pdf | 296.9 KiB | 2020-Feb-20 23:43 |
| Engineer's Stethoscope.pdf | 293.1 KiB | 2010-Jun-02 00:14 |
| Power Failure Indicator.pdf | 291.6 KiB | 2023-Jul-12 20:38 |
| LED Visual Data Monitor.jpg | 288.1 KiB | 2019-Jun-03 22:41 |
| Active DC Load.pdf | 286.1 KiB | 2023-Sep-26 18:27 |
| Switchable Test Socket.pdf | 285.1 KiB | 2020-Mar-04 18:44 |
| Resistance Decade Box.pdf | 284.5 KiB | 2009-Jul-23 00:17 |
| Surface Mount Part Ic Codes.zip | 282.7 KiB | 2004-May-26 02:00 |
| Linear Scale Frequency Meter PCB ETI 150.pdf | 280.0 KiB | 2024-Jan-05 21:16 |
| Electronic Stethoscope.pdf | 279.4 KiB | 2009-Oct-07 00:34 |
| Continuity Tester.pdf | 270.7 KiB | 2020-Feb-22 23:11 |
| Audio-Visual Continuity Tester.pdf | 258.9 KiB | 2023-Oct-23 18:29 |
| Setting up your oscilloscope to measure jitter.pdf | 255.9 KiB | 2022-Dec-13 19:53 |
| Soil Moisture Meter.pdf | 239.6 KiB | 2009-Apr-12 12:20 |
| The Wagner Bridge.pdf | 228.1 KiB | 2009-Sep-25 23:56 |
| Bus-Line Tracer.pdf | 218.1 KiB | 2023-Apr-07 21:43 |
| CLMeterB_Schematic.pdf | 213.0 KiB | 2009-Dec-13 16:48 |
| Salt Concentration Meter.pdf | 211.2 KiB | 2004-Feb-02 00:18 |
| Contact Tester Quantifies Open-Short Circuit Tendencies.pdf | 208.8 KiB | 2004-May-26 02:00 |
| Deviation Meter.pdf | 207.9 KiB | 2024-May-15 21:48 |
| Accurate Gain-Phase Measurement up to 2.5GHz.pdf | 204.0 KiB | 2020-Mar-03 21:54 |
| Carvalyzer to Service Tube Car Radios.pdf | 201.4 KiB | 2020-Feb-12 17:55 |
| Ponyprog.zip | 190.7 KiB | 2004-May-26 02:00 |
| Telco In A Box Corrections.pdf | 187.9 KiB | 2004-May-26 02:00 |
| Signal and Voltage Indicators.pdf | 187.7 KiB | 2009-Aug-22 21:37 |
| Fart Strength Meter.pdf | 187.5 KiB | 1999-May-20 15:30 |
| Measuring Complex Impedances.pdf | 186.9 KiB | 2009-Oct-29 22:19 |
| Relative Humidity Measurement.pdf | 186.8 KiB | 2020-Aug-23 19:01 |
| Portable Gas Detector.pdf | 182.2 KiB | 2021-Jan-18 22:47 |
| Blown Fuse Indicators.pdf | 168.9 KiB | 2009-May-30 23:02 |
| Audible Conductance Tester.jpg | 163.7 KiB | 2024-Mar-03 16:14 |
| Add a meter to the ETI-560 Mains Cable Seeker 1980-05.jpg | 162.4 KiB | 2024-Mar-23 00:09 |
| Phase Measurement With A Pll.pdf | 158.0 KiB | 2004-May-26 02:00 |
| Wavemeter for Hams and CBers.pdf | 154.4 KiB | 2009-Jun-08 00:43 |
| Cable Tester - Go-No Go.pdf | 154.2 KiB | 2005-Mar-28 08:55 |
| Fiber-Optic Strand Checker.pdf | 153.0 KiB | 2020-Oct-22 19:22 |
| Liquid Level Alarm.pdf | 151.5 KiB | 2010-Oct-18 22:57 |
| Four Test Gadgets made with a single hex inverter.pdf | 151.3 KiB | 2020-Dec-21 00:57 |
| Make 4 Test Gadgets from one Hex Inverter IC.pdf | 151.3 KiB | 2024-Feb-12 00:15 |
| Live Wire Scanner for 220V.pdf | 151.2 KiB | 2020-Aug-03 18:34 |
| An Inexpensive Time Domain Reflectometer.pdf | 150.4 KiB | 2022-Sep-25 23:25 |
| Sobriety Tester.zip | 146.5 KiB | 2003-Nov-13 01:25 |
| Diode Matrix Tester.pdf | 144.4 KiB | 2004-May-26 02:00 |
| Solar Panel Simulator to test circuits.pdf | 140.2 KiB | 2010-Jun-02 23:04 |
| Distortion Measurement.jpg | 139.0 KiB | 2011-Sep-28 13:59 |
| Leakage Tester.pdf | 136.1 KiB | 2009-Oct-23 21:38 |
| Modem Tester.zip | 132.7 KiB | 2003-Nov-13 01:47 |
| Applause Meter.pdf | 127.4 KiB | 1998-Jul-22 17:22 |
| Measuring Temperatures on Computer Chips.pdf | 123.9 KiB | 2020-Jul-03 16:30 |
| Chart Recorder Plots Total Loads in Several Circuits.pdf | 117.4 KiB | 2010-Jun-24 21:18 |
| Thermal Resistance Automatic Test Setup.pdf | 115.3 KiB | 2010-Jun-24 21:09 |
| Constant Current Dummy Load.pdf | 113.8 KiB | 2004-May-26 02:00 |
| Precision voltage-controlled current sink tests power supplies.pdf | 113.3 KiB | 2023-Sep-25 22:54 |
| Tester For Dip Switches.pdf | 113.3 KiB | 2004-May-26 02:00 |
| Blown Fuse Indicator.pdf | 111.4 KiB | 2004-May-26 02:00 |
| Series Wired Christmas Light Tester.pdf | 106.4 KiB | 2024-Apr-16 22:18 |
| Power Meter with 1 Percent Accuracy.pdf | 103.5 KiB | 2009-Sep-20 18:28 |
| Interface Panel.pdf | 103.3 KiB | 2022-Jun-08 23:58 |
| Winking LED Resistance Bridge.pdf | 99.8 KiB | 2014-Apr-22 22:52 |
| Current Transmitter Calibrator.pdf | 99.8 KiB | 2009-Jul-25 22:50 |
| Flexible Fault Detection With Reed Coil Relays.pdf | 96.2 KiB | 2004-May-26 02:00 |
| Pulse Width Range Detector.pdf | 94.1 KiB | 2010-Jun-09 23:22 |
| Continuity Tester 2.pdf | 92.1 KiB | 2009-Dec-06 01:03 |
| Self Powered Dummy Load.pdf | 89.6 KiB | 2009-Aug-16 18:44 |
| Precision Electroscope.pdf | 89.3 KiB | 2022-Jun-26 18:45 |
| Precision active load operates as low as 2V.pdf | 88.6 KiB | 2023-Aug-15 20:05 |
| Center Zero Led Bar-Dot Meter.pdf | 82.8 KiB | 2006-Feb-20 23:29 |
| Continuity Checker.zip | 82.8 KiB | 2004-May-26 02:00 |
| Overload Proof Current Indicator.pdf | 81.7 KiB | 2009-Jan-11 18:59 |
| Bridge Circuit Meter Substitute.pdf | 79.9 KiB | 2004-May-26 02:00 |
| Dead Short Tester.pdf | 79.0 KiB | 2004-May-26 02:00 |
| Short Circuit Finder.pdf | 74.6 KiB | 2023-Dec-03 18:53 |
| Filter to Measure Power Line Harmonics.pdf | 73.8 KiB | 2009-Sep-13 20:57 |
| Measuring Light Intensity.pdf | 73.7 KiB | 2020-Mar-02 17:00 |
| Absorption Wavemeter.pdf | 73.4 KiB | 2020-May-28 22:16 |
| Switched Load To Test Power Supply Reponse.pdf | 72.3 KiB | 2004-Dec-06 00:08 |
| Accurate Op-Amp Bridge.pdf | 69.9 KiB | 2023-Oct-15 20:59 |
| True RMS Detector.pdf | 69.8 KiB | 2024-May-29 22:24 |
| Audible Continuity Tester.pdf | 69.4 KiB | 2022-Jan-31 01:50 |
| 25-kV generator tests insulation.pdf | 68.9 KiB | 2023-Nov-26 20:34 |
| Polarity Sensing Continuity Tester.pdf | 66.9 KiB | 2004-May-26 02:00 |
| High-Low Logic Tester.pdf | 58.0 KiB | 2009-May-31 22:27 |
| Maximum Voltage Detector.pdf | 57.4 KiB | 2009-May-22 23:42 |
| Short Circuit Detector.pdf | 56.2 KiB | 2023-Nov-29 23:04 |
| Voltmeter for the Blind.pdf | 55.4 KiB | 2009-Dec-06 23:53 |
| Telephone Tester-Off Line.zip | 53.6 KiB | 2004-May-26 02:00 |
| Continuity Tester (2).pdf | 51.7 KiB | 2020-Feb-24 18:41 |
| Build A Pair Of Lazy Leads.pdf | 50.6 KiB | 2009-Jun-22 23:48 |
| Usimg a DMM to measure capacitance.pdf | 48.9 KiB | 2009-Jan-14 00:47 |
| KRS Distance Measuring Device Interface Board.pdf | 46.9 KiB | 2009-Sep-20 14:54 |
| Beat-Frequency Indicator.pdf | 46.6 KiB | 2020-Mar-21 17:26 |
| Measuring Standby Power Of Cmos Rams.pdf | 45.9 KiB | 2004-May-26 02:00 |
| Fluxmeter Input For Dmm.pdf | 45.0 KiB | 2004-May-26 02:00 |
| Passive Distortion Measuring Network.pdf | 39.0 KiB | 2009-Oct-21 23:38 |
| Sanatron Current Timebase.pdf | 38.6 KiB | 2014-May-19 20:27 |
| Graphic Level Meter 2100.zip | 31.4 KiB | 2000-Mar-16 00:01 |
| Circuit Breaker Substitution Box.pdf | 28.8 KiB | 2009-Jul-19 15:50 |
| Breakdown Voltage Meter.pdf | 28.2 KiB | 2014-May-19 20:28 |
| Instrument Read Out in Braille Comments.pdf | 26.2 KiB | 2009-Aug-06 00:43 |
| Continuity Tester 1.pdf | 26.2 KiB | 2009-Jul-19 17:04 |
| Current Flow Indicator.pdf | 23.7 KiB | 2009-Aug-20 00:13 |
| Line Frequency Meter.pdf | 21.2 KiB | 2010-Jan-02 01:31 |
| True Rms Converter.pdf | 17.7 KiB | 2004-May-26 02:00 |
| Water Level Indicator.pdf | 17.1 KiB | 2009-Aug-20 00:14 |
| Dc Voltage Or Current Meter.pdf | 16.9 KiB | 2004-May-26 02:00 |
| DC Lamp Failure Indicator.pdf | 15.2 KiB | 2009-May-30 22:46 |
| Rf Voltmeter.pdf | 15.2 KiB | 2004-May-26 02:00 |
| Earth Warning Indicator.pdf | 14.9 KiB | 2009-Oct-09 23:38 |
| Applause Meter Circuit only.gif | 14.3 KiB | 1997-Feb-16 15:01 |
| High-Performance Dc Voltmeter Converter.pdf | 14.2 KiB | 2004-May-26 02:00 |
| Contactless AC Mains Voltage Detector.zip | 5.8 KiB | 1999-May-20 14:19 |
