Index of /files/Test Equipment, Meters & Measurement/Misc Test Equipment/Circuits/
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25-kV generator tests insulation.pdf 27-Nov-2023 01:34 69K
A Practical Gain Set.pdf 09-Nov-2023 03:08 754K
Absorption Wavemeter.pdf 01-Nov-2022 12:51 73K
Accuracy Tester for Mechanical Watches.pdf 13-Aug-2023 00:01 2M
Accurate Gain-Phase Measurement up to 2.5GHz.pdf 01-Nov-2022 12:51 204K
Accurate Op-Amp Bridge.pdf 16-Oct-2023 01:59 70K
Active DC Load.pdf 26-Sep-2023 23:27 286K
An Inexpensive Time Domain Reflectometer.pdf 26-Sep-2022 04:25 150K
Anemometer.pdf 01-Nov-2022 12:51 2M
Applause Meter Circuit only.gif 01-Nov-2022 12:51 14K
Applause Meter.pdf 01-Nov-2022 12:51 127K
Audible Continuity Tester.pdf 31-Jan-2022 06:50 69K
Audio-Visual Continuity Tester.pdf 23-Oct-2023 23:29 259K
Auto Service Meter.pdf 06-Jan-2024 05:58 787K
Auto-Temp Notes HOE P84.pdf 07-Apr-2022 05:40 82K
Beat-Frequency Indicator.pdf 01-Nov-2022 12:51 47K
Blown Fuse Indicator.pdf 01-Nov-2022 12:51 111K
Blown Fuse Indicators.pdf 01-Nov-2022 12:51 169K
Breakdown Voltage Meter.pdf 01-Nov-2022 12:51 28K
Bridge Circuit Meter Substitute.pdf 01-Nov-2022 12:51 80K
Build A Pair Of Lazy Leads.pdf 01-Nov-2022 12:51 51K
Build An Ion Meter Errata RE 1990 03.pdf 01-Nov-2022 12:51 313K
Build a Seismograph Part 1 ETT 1989-12.pdf 01-Nov-2022 12:51 6M
Bus-Line Tracer.pdf 08-Apr-2023 02:43 218K
CLMeterB_Schematic.pdf 01-Nov-2022 12:51 213K
Cable Reflection Tester.pdf 01-Nov-2022 12:51 3M
Cable Tester - Go-No Go.pdf 01-Nov-2022 12:51 154K
Cable Tester ETI559.pdf 18-Jun-2023 21:26 3M
Capacitance Substitution Box.pdf 01-Nov-2022 12:51 3M
Capacitive Liquid Level Measurement.pdf 01-Nov-2023 23:39 1M
Carvalyzer to Service Tube Car Radios.pdf 01-Nov-2022 12:51 201K
Center Zero Led Bar-Dot Meter.pdf 01-Nov-2022 12:51 83K
Chart Recorder Plots Total Loads in Several Cir..> 01-Nov-2022 12:51 117K
Circuit Breaker Substitution Box.pdf 01-Nov-2022 12:51 29K
Circuits Designed for a Cruel and Unyielding Wo..> 04-May-2016 23:02 1M
Climate Logger.pdf 01-Nov-2022 12:51 4M
Constant Current Dummy Load.pdf 01-Nov-2022 12:51 114K
Contact Tester Quantifies Open-Short Circuit Te..> 01-Nov-2022 12:51 209K
Contactless AC Mains Voltage Detector.zip 01-Nov-2022 12:51 5969
Continuity Checker.zip 01-Nov-2022 12:51 83K
Continuity Tester (2).pdf 01-Nov-2022 12:51 52K
Continuity Tester (3).pdf 01-Nov-2022 12:51 4M
Continuity Tester (4).pdf 01-Nov-2022 12:51 4M
Continuity Tester (5).pdf 06-Sep-2023 03:42 552K
Continuity Tester 1.pdf 01-Nov-2022 12:51 26K
Continuity Tester 2.pdf 01-Nov-2022 12:51 92K
Continuity Tester.pdf 01-Nov-2022 12:51 271K
Current Flow Indicator.pdf 01-Nov-2022 12:51 24K
Current Transmitter Calibrator.pdf 01-Nov-2022 12:51 100K
DC Lamp Failure Indicator.pdf 01-Nov-2022 12:51 15K
Dc Voltage Or Current Meter.pdf 01-Nov-2022 12:51 17K
Dead Short Tester.pdf 01-Nov-2022 12:51 79K
Design a 100A Active Load to Test Power Supplie..> 12-Nov-2022 02:11 945K
Design a 100A active load to test power supplie..> 12-Aug-2023 23:33 1M
Designing Instrumentation Circuitry with RMS-DC..> 01-Nov-2022 12:51 1M
Differential Audio Distortion Analyzer.pdf 01-Nov-2022 12:51 585K
Digital Barometer Errata ME 1989-01.pdf 01-Nov-2022 12:51 58K
Digital Clock and Thermometer.pdf 01-Nov-2022 12:51 2M
Digital IC Breadboard.pdf 01-Nov-2022 12:51 521K
Digital Insulation Tester (Requires firmware do..> 12-Jan-2024 02:03 5M
Digital Phototachometer.pdf 01-Nov-2022 12:51 703K
Digital Pressure Gauge.pdf 01-Nov-2022 12:51 672K
Digital Strobe to Measure RPM.pdf 04-Jul-2023 02:24 8M
Digital Wind Speed Meter.pdf 01-Nov-2022 12:51 753K
Diode Matrix Tester.pdf 01-Nov-2022 12:51 144K
Dip Switches To Isolate Faults In A System.pdf 01-Nov-2022 12:51 1M
Distortion Measurement.jpg 01-Nov-2022 12:51 139K
Earth Warning Indicator.pdf 01-Nov-2022 12:51 15K
Electric Fence Tester ETI 1512.pdf 06-Apr-2023 01:37 4M
Electronic Stethoscope.pdf 01-Nov-2022 12:51 279K
Electroscope.pdf 20-Dec-2023 05:25 3M
Electroscopes & Geiger Counters.pdf 01-Nov-2022 12:51 7M
Engineer's Stethoscope.pdf 01-Nov-2022 12:51 293K
Environmental Test Chamber.pdf 01-Nov-2022 12:51 528K
Fart Strength Meter.pdf 01-Nov-2022 12:51 187K
Fiber-Optic Strand Checker.pdf 01-Nov-2022 12:51 153K
Filter to Measure Power Line Harmonics.pdf 01-Nov-2022 12:51 74K
Flexible Fault Detection With Reed Coil Relays.pdf 01-Nov-2022 12:51 96K
Fluxmeter Input For Dmm.pdf 01-Nov-2022 12:51 45K
Four Test Gadgets made with a single hex invert..> 01-Nov-2022 12:51 151K
Fraser Technologies Ltd Applause Meter.pdf 01-Nov-2022 12:51 329K
Geiger Counter.pdf 01-Nov-2022 12:51 1M
Gigaohm Decade Resistance Box.pdf 07-Jan-2024 01:48 1M
Graphic Level Meter 2100.zip 01-Nov-2022 12:51 31K
High-Low Logic Tester.pdf 01-Nov-2022 12:51 58K
High-Performance Dc Voltmeter Converter.pdf 01-Nov-2022 12:51 14K
ICs for Test Instriments.pdf 18-Nov-2023 22:42 564K
Indicators for All Occasions.pdf 01-Nov-2022 12:51 805K
Infrared Remote Tester.pdf 01-Nov-2022 12:51 450K
Instrument Read Out in Braille Comments.pdf 01-Nov-2022 12:51 26K
Intelligent Cable Tester.pdf 01-Nov-2022 12:51 3M
Interface Panel.pdf 09-Jun-2022 04:58 103K
Ion Meter Errata RE 1990-03.pdf 01-Nov-2022 12:51 313K
KRS Distance Measuring Device Interface Board.pdf 01-Nov-2022 12:51 47K
LED Visual Data Monitor.jpg 01-Nov-2022 12:51 288K
Lampkin 205A Deviation Meter.pdf 01-Nov-2022 12:51 1M
Leakage Tester.pdf 01-Nov-2022 12:51 136K
Line Frequency Meter.pdf 01-Nov-2022 12:51 21K
Linear Scale Frequency Meter PCB ETI 150.pdf 06-Jan-2024 02:16 280K
Liquid Level Alarm.pdf 01-Nov-2022 12:51 151K
Live Wire Scanner for 220V.pdf 01-Nov-2022 12:51 151K
Load-transient-response for voltage regulators.pdf 16-Aug-2023 01:13 2M
Locate Faults In Coaxial Cables.pdf 01-Nov-2022 12:51 616K
Low Cost Weigh Scales.pdf 01-Nov-2022 12:51 426K
MEASURING MAGNETIC FIELDS.pdf 14-Apr-2022 01:19 2M
Magnetic Field Detector.pdf 16-Jul-2022 03:26 398K
Magnetic Field Sensors.pdf 30-Jul-2022 01:05 493K
Magnetometer.pdf 12-Nov-2022 02:24 471K
Mains Cable Seeker.pdf 01-Nov-2022 12:51 835K
Making Use of Audio Indicators.pdf 06-Nov-2023 22:01 997K
Making a Wheatstone Bridge.pdf 01-Nov-2022 12:51 3M
Maximum Voltage Detector.pdf 01-Nov-2022 12:51 57K
Measurement and Control Circuits Collection.pdf 01-Nov-2022 12:51 4M
Measuring Complex Impedances.pdf 01-Nov-2022 12:51 187K
Measuring Insulation Resistance.pdf 01-Nov-2022 12:51 297K
Measuring Large Currents.pdf 01-Nov-2022 12:51 5M
Measuring Light Intensity.pdf 01-Nov-2022 12:51 74K
Measuring Nanoamperes.pdf 01-Nov-2022 12:51 1M
Measuring Relative Humidity.pdf 01-Nov-2022 12:51 1M
Measuring Standby Power Of Cmos Rams.pdf 01-Nov-2022 12:51 46K
Measuring Temperatures on Computer Chips.pdf 01-Nov-2022 12:51 124K
Measuring relative humidity.pdf 01-Nov-2022 12:51 1M
Microwave Oven Analyzer.pdf 01-Nov-2022 12:51 3M
Mini-Metrology Lab.pdf 01-Nov-2022 12:51 1M
Modem Tester.zip 01-Nov-2022 12:51 133K
Motor Speed Measurement Circuit.pdf 01-Nov-2022 12:51 735K
Multiple Test Point Monitor.pdf 01-Nov-2022 12:51 5M
Old School Instruments and Accessories.pdf 26-Feb-2022 02:29 8M
Opacity Measurement.pdf 04-Nov-2023 03:15 1M
Overload Proof Current Indicator.pdf 01-Nov-2022 12:51 82K
Passive Distortion Measuring Network.pdf 01-Nov-2022 12:51 39K
Phase Measurement With A Pll.pdf 01-Nov-2022 12:51 158K
Piezoelectric driver finds buzzer's resonant Fr..> 08-Oct-2023 01:59 358K
Pipe and Cable Locator.pdf 01-Nov-2022 12:51 2M
Pola Testers.pdf 01-Nov-2022 12:51 566K
Polarity Sensing Continuity Tester.pdf 01-Nov-2022 12:51 67K
Ponyprog.zip 01-Nov-2022 12:51 191K
Portable Gas Detector.pdf 01-Nov-2022 12:51 182K
Power Failure Indicator.pdf 13-Jul-2023 01:38 292K
Power Meter with 1 Percent Accuracy.pdf 01-Nov-2022 12:51 103K
Power Supply Tester.pdf 01-Nov-2022 12:51 659K
Precision Electroscope.pdf 26-Jun-2022 23:45 89K
Precision active load operates as low as 2V.pdf 16-Aug-2023 01:05 89K
Precision voltage-controlled current sink tests..> 26-Sep-2023 03:54 113K
Pulse Width Range Detector.pdf 01-Nov-2022 12:51 94K
Pyrometers Without Tears Errata EA 1987-10.pdf 14-Apr-2022 00:49 2M
Quicktracer.zip 01-Nov-2022 12:51 864K
R&C Substitution Boxes.pdf 01-Nov-2022 12:51 1M
RF Exposure Test Methods.pdf 01-Nov-2022 12:51 399K
Radiation Monitor.pdf 01-Nov-2022 12:51 2M
Radon Monitor Part 2.pdf 01-Nov-2022 12:51 734K
Relative Humidity Gauge.pdf 01-Nov-2022 12:51 732K
Relative Humidity Measurement.pdf 01-Nov-2022 12:51 187K
Resistance Bridge.pdf 22-Nov-2022 23:51 474K
Resistance Decade Box (2).pdf 22-Nov-2022 23:53 722K
Resistance Decade Box.pdf 01-Nov-2022 12:51 284K
Resistor Bank.pdf 18-Dec-2023 21:28 430K
Rf Voltmeter.pdf 01-Nov-2022 12:51 15K
Salt Concentration Meter.pdf 01-Nov-2022 12:51 211K
Sanatron Current Timebase.pdf 01-Nov-2022 12:51 39K
Self Powered Dummy Load.pdf 01-Nov-2022 12:51 90K
Setting up your oscilloscope to measure jitter.pdf 14-Dec-2022 00:53 256K
Short Circuit Detector.pdf 30-Nov-2023 04:04 56K
Short Circuit Finder.pdf 03-Dec-2023 23:53 75K
Signal and Voltage Indicators.pdf 01-Nov-2022 12:51 188K
Simple Impedance Bridge.pdf 20-Sep-2023 21:48 344K
Simple LED Mains Tester.pdf 08-Jul-2023 02:48 799K
Simple Test Circuits.pdf 01-Nov-2022 12:51 1M
Sobriety Tester.zip 01-Nov-2022 12:51 147K
Soil Moisture Meter.pdf 01-Nov-2022 12:51 240K
Solar Dosimeter.pdf 01-Nov-2022 12:51 3M
Solar Panel Simulator to test circuits.pdf 01-Nov-2022 12:51 140K
Sure Luck Ohms - Resistor Value Identifier.pdf 01-Nov-2022 12:51 4M
Surface Mount Part Ic Codes.zip 01-Nov-2022 12:51 283K
Switchable Test Socket.pdf 01-Nov-2022 12:51 285K
Switched Load To Test Power Supply Reponse.pdf 01-Nov-2022 12:51 72K
TIME -FREQUENCY MEASURING SYSTEM Part 2 73 1973..> 30-Nov-2023 23:39 2M
Telco In A Box Corrections.pdf 01-Nov-2022 12:51 188K
Telco In A Box.pdf 01-Nov-2022 12:51 548K
Telephone Tester-Off Line.zip 01-Nov-2022 12:51 54K
Temperature Adapter for Multimeter ETI 153.pdf 26-Sep-2023 23:43 4M
Temperature Indicator.pdf 08-Jan-2024 03:14 487K
Test Unit for Sequential Logic.pdf 09-Jul-2023 04:04 798K
Tester For Dip Switches.pdf 01-Nov-2022 12:51 113K
The Wagner Bridge.pdf 01-Nov-2022 12:51 228K
Thermal Resistance Automatic Test Setup.pdf 01-Nov-2022 12:51 115K
Thermocouple interface to micrcontroller.pdf 22-Oct-2022 20:30 673K
Time Voltage Calibrator.pdf 01-Nov-2022 12:51 1M
True Rms Converter.pdf 01-Nov-2022 12:51 18K
Ultrasonic Listener.pdf 01-Nov-2022 12:51 1M
Usimg a DMM to measure capacitance.pdf 01-Nov-2022 12:51 49K
Using Conductance to Check Out Electronic Compo..> 01-Nov-2022 12:51 878K
Using Tune Up Instruments.zip 01-Nov-2022 12:51 1M
Utility Amplifier - Lab Power Supply.pdf 29-Sep-2023 23:20 1M
Utlilty Amplifier-Supply for the experimenter's..> 17-Nov-2023 01:13 4M
V & I Calibrator.pdf 01-Nov-2023 23:40 468K
Versatile Tester with Audio Indication.pdf 21-Nov-2023 02:43 433K
Voltage & Continuity Tester.pdf 21-Feb-2022 05:11 464K
Voltmeter for the Blind.pdf 01-Nov-2022 12:51 55K
Water Level Indicator.pdf 01-Nov-2022 12:51 17K
Wavemeter for Hams and CBers.pdf 01-Nov-2022 12:51 154K
Winking LED Resistance Bridge.pdf 01-Nov-2022 12:51 100K
Zero Marking of AC Waveforms.pdf 01-Nov-2022 12:51 459K