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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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CAPACITOR FORMING & TESTING x FORMING (CAPACITOR) x REFORMING (CAPACITOR) xx CAPACITOR & CAPACITANCE xx ELECTRONIC TESTING Versatile capacitor tester. Direct-reading meter accurately measures a capacitor's value and condition. Dielectric absorption in capacitors. Includes schematic for a test fixture to illustrate some of the D.A. phenomenon on an oscilloscope. Accessory for the Heathkit IM-4100 frequency counter is used to measure capacitance. A real-time signal test for capacitor quality. Tips on forming (charging) and testing old capacitors. Shering bridge circuit for measuring unknown capacitance. Simple adapter for testing audio cable capacitance using a digital capacitance meter. Circuit to check the quality of capacitors is used along with a signal generator and oscilloscope. Resins for loads. Technique for protecting the fragile leads of capacitors, resistors and inductors which are used for testing. Fit them with connectors and then encapsulate them in casting resin. Capacitor ESR (Equivalent Series Resistance) tester. Build this in-circuit tester to track down faulty capacitors. Build a reactive load to test the behavior of amp designs. This 4-ohm design combines a resistive, inductive, and capacitive load all in one unit. Computerized capacitance meter. Use this test meter along with your TRS-80 computer to select good capacitors. Est. cost: $20. A combined resistor and capacitor substitution box. Provides 12 capacitor values from 470 pF to 100 uF. Test circuit will allow anyone to closely match R or C components. It also serves as a test oscillator and secondary R or C measuring circuit. Build a quick and easy curve tracer to test components. Used in connection with an oscilloscope to check diodes, thyristors, transistors, resistors, capacitors, etc. Timing capacitance for sorting unidentified large capacitors. Test 1 to 10,000 microfarad capacitors with great accuracy. The test circuit may also double as an electronic metronome. Est. cost: $20. The F/C meter. Measure frequency (1 Hz to 100 kHz) and capacitance (5 picofarad to 1 microfarad) over five ranges. Can also provide a frequency standard or be used as an oscilloscope calibrator, squarewave signal injector, a marker for audio-sweep generators, and a non-contact tachometer. Est. cost: $25 (kit). Auto-ranging digital capacitance meter. Can read values from 1 pF to 1000 uF. Est. cost: $50. Micromicrofarad measuring device for capacitors. Adjustable impedance bridge measures resistance from 0.1 ohm to 14 megohms and capacitance from 1 uuf to 14 uf. Accuracy is +/-5%. Battery or 117 VAC power supply. Micro capacitor checker. Tester has 5 overlapping ranges of 5, 20, 50, 200, and 500 microfarads. Uses a 3-volt test voltage. Accuracy better than 5%. Elecrolytic leakage checker tests capacitors under voltage, from 5 to 50 VDC. PC-based test bench. Part 2. 100-MHz digital frequency counter, an event/period meter, and a precision capacitance meter. Est. cost: $149 (kit). Technique for locating open electrolytic capacitors while still in the circuit. Build a direct-reading capacitance meter. Design is customized for the capacitance range desired. Measurement bridges. Part 2. L-C bridges. Learn about popular capacitance and inductance bridges (for measuring capacitance and inductance). Build your own Hay-Maxwell bridge and an 18-range LCR laboratory-grade bridge. Measurement bridges. Part 3. Special resistance and capacitance bridges and substitution boxes. Build this self-calibrating L/C meter. This microcontroller-based digital inductance and capacitance meter features a measurement range of 0.001 to 100 microhenrys and 0.010 picofarads to 1 microfarad. Est. cost: $80 (kit). Using the 7107 integrated circuit chip. It is a combination analog-to-digital converter, reference voltage, timing clock, and decoder/driver circuit for 7-segment LED displays. Circuits shown for a digital voltmeter, DC current meter, resistance meter, capacitance meter, frequency meter, etc. Quick-test component tester. Use it to find bad components (capacitors, resistors, diodes, transistors, SCR's, and other bipolar junction devices) either in-circuit or out-of-circuit. Used in conjunction with an oscilloscope. Building a capacitance substitution box (C-box). Provides outputs from 10 pF to 11.1110 uF just by pushing buttons on the front of the box. Capacitance-box applications. Using the capacitance substitution box (C-box) to test active and passive audio circuits. Measuring inductors and capacitors at RF frequencies. Several different methods are described. Capacitance measuring nomogram and description of a test circuit that may be used to check large numbers of electrolytic capacitors rapidly. Electrolytic-capacitor tester. Does not measure actual capacitance, but provides a qualitative test using the required working voltage. Range from 0.001 to 1000 microfarads. IC capacitance meter with range up to 10 uF can also test high-C, low-voltage disc capacitors. Two simple test jigs for finding small inductance and capacitance values with a grid-dip oscillator. Measuring capacitance with your VTVM. Capacitance adapter allows capacitance from .001 to 10 microfarads to be measured on a vacuum-tube voltmeter. Use any meter having a 3- or 5-volt range. Est. cost: $7. Direct-reading capacity meter can measure capacity from 4pF to 0.1 uF in four switch-selected ranges with a 5% accuracy. Est. cost: $20. Instant patch box provides a shielded method of substituting resistance, capacitance or inductance into a circuit with a minimum of problems. Schematic for a capacitance tester to measure the actual capacity of an electrolytic capacitor found in many antique radios. Capacitance meter will measure capacitances from about 100 picofarads up to 5000 nanofarads (5 microfarads). The meter also shows when the eight AA batteries which power the unit should be replaced or recharged. Better method for re-forming electrolytics in old audio equipment. Tips on (1) the life of unused capacitors and (2) testing capacitors. Electrolytic capacitor reforming unit which can also be used as a current-limited high-voltage DC power supply. Capacitance meter measures full scale from 500-pF to 500-uF in six decades and requires no calibration and no zeroing. Capacitance-to-voltage converter converts a DMM into a capacitance meter capable of measuring up to 1999 pF. Handy capacitance bridge (Wheatstone bridge) circuit can be used for measuring resistance, capacitance and inductance. Time CapSUL (Timing Capacitance for Sorting Unidentified Large Capacitors). Use it to test 1 to 10,000 microfarad capacitors. Est. cost: $20. Digital capacitance meter makes short work of identifying unmarked capacitors. Capacitor Checker tells you the capacitance value of unmarked capacitors. Connects directly to an oscilloscope or frequency counter through two banana jacks. Capacitance checker circuit can indicate a leakage resistance of 100 megohms or more. Capacitance adapter for your DMM (digital multimeter) lets you measure capacitance up to 2.2 microfarads. KIMCTR measures capacitance. Enhancement to KIMCTR (May 1979) results in a capacitance meter able to measure from 1 pF to 999.999 uF. Digital capacitance meter measures values from 1 pF to 100,000 uF. Estimated cost: $35. Circuit will allow you to measure capacitance on a VOM. Build this direct-reading capacitor meter. Determine capacitor values from 5 pF to 1 mF. Build a CoCo testlab. How to use a Radio Shack Color Computer to test ICs, transistors, diodes, and capacitors. Testlab is a hardware/software system. It consists of a build-it-yourself plug-in board and BASIC programs. No need to modify the actual computer. Instructions for using a Commodore 64 computer are also included. Part 1. Fabricating the printed-circuit board. Build a CoCo testlab. How to use a Radio Shack Color Computer to test ICs, transistors, diodes, and capacitors. Part 2. How to use the testlab. Includes listing of the IC Tester program and Capacitance Meter program, both written in BASIC. An in-circuit component tester. Simple oscilloscope accessory speeds up in-circuit testing of resistors, capacitors, inductors, and transistor and diode junctions. How to avoid getting zapped when working on your flash unit circuitry. A simple gadget to discharge a flash capacitor. Build this self-calibrating L/C (inductance/capacitance) meter. Features a measurement range of 0.001 to 100 microhenrys and 0.010 picofarads to 1 microfarad. Est. cost: $80 (kit) Auto-ranging digital capacitance meter automatically determines the range and displays the capacitance of almost any capacitor up to 5000 micro farads. Est. cost: $65 (kit). Simple instrument measures values of coils and capacitors. Combination RC substitution box. Flip switches to substitute heavy-duty resistors or capacitors individually or in a series or in parallel networks. Range: 0-12,500 ohms. Capsnapper lets you conveniently jump a suspected capacitor with a good capacitor for quick test purposes and then lets you safely discharge both capacitors after the power supply is shut off. Circuit for a capacitor tester has an audio output tone frequency determined by the capacitor undergoing test. Circuit for a capacitor tester with a visual readout. Capacitance meter measures values between a few picofarads and 0.1 microfarad. Est. cost: $15. Direct-reading capacitance meter measures from 15 pF to 10 uF in five ranges, plus options up to 100 uF. Capacitance meter measures from 100 uF to 1 uF on a linear meter scale. A high-value electrolytic capacitor meter checks capacitance from 10 to 100,000 microfarads and indicates leakage. Using an ordinary filament transformer, a fixed resistor and an AC voltmeter to test capacitors. Capacitance multiplier circuit. Transistorized circuit can simulate capacitance values up to 1 farad or more. Curve tracer checks semiconductor quality from breakdown voltage to beta. Used with an oscilloscope. Also can check capacitors and inductors. Capacitor tester circuit uses the NSL4944 universal LED. Capacitance meter has five linear ranges to 1, 10, 100, 1000 and 10,000 microfarads. Digital capacitance meter. Provides digital display of capacitance from 100 pF to 1000 uF. All test potentials are less than 2 volts. Build an autoranging digital capacitance meter. Autoranges from 1 pF to 1 uF and from 1 uF to 4000 uF. Will determine the values of unmarked capacitors and display them on a 3-digit LED display. Est. cost: $70. Capacitance measurement circuit is accurate to 10% and will measure values from 10 picofarads to 10 microfarads. Build a reactance measuring set to measure inductance from 1 microhenry to 1 henry, as well as capacitance from 1 picofarad to 1 microfarad. Est. cost: $130. Build a resistance capacitance substitution box. Provides resistances from 0.5 ohm to 20 megohms and capacitances from 5000 pF to 2 uF. The F/C meter. A low-cost project that allows you to measure frequencies from 1 Hz to 100 kHz and capacitance from 5 pF to 1 uF over five ranges. Measuring inductance on a capacitance meter. How to convert capacitance readings to inductance for the Beckman DM25L meter. Process may be adapted to other meters. Capacitor tester/analyzer circuit is used with an oscilloscope or frequency counter. Capacitance bridge tester, consisting of an audio oscillator combined with a modified Wheatstone bridge, will measure practically everything between 0.001 uF and 10 uF. Capacitance bridge circuit is used to help determine the values of unmarked small-value capacitors. Capacitor reformer circuit is used to restore (reform) electrolytic capacitors before placing them in service. Simple capacitor checker circuit for the beginning electronics builder. Electrolytic-capacitor leakage-test circuit. Build an auto-ranging digital capacitance meter. Est. cost: $50. Resurrecting an older model capacitor analyzer (a Sprague Model TO-4 Tel-Ohmike). Part 1. Resurrecting an older model capacitor analyzer (a Sprague Model TO-4 Tel-Ohmike). Part 2. Resurrecting an older model capacitor analyzer (a Sprague Model TO-4 Tel-Ohmike). Part 3. Resurrecting an older model capacitor analyzer (a Sprague Model TO-4 Tel-Ohmike). Part 4. Bar-graph display circuit enables you to watch low-voltage capacitors discharge. Build an auto ranging capacitance meter. Est. cost: $55 (kit). Capacitor comparator circuit will let you tell quickly if capacitors are close to each other in value. Build a capacitance meter adapter to measure capacitance with your DMM (digital multimeter). Est. cost: $13 (kit). Capacitor testing circuit for use with a digital multimeter. Build a digital capacitance meter with a 4-digit LED display that offers full-scale readings up to 9999 pF, 999.9 nF, and 99.99 uF. Electrolytic meter. Build a tester that will help determine the condition of electrolytic capacitors commonly found in the power-supply circuits of computers, TVs, etc. Digital readout capacitance meter measures from 100 pF to 1000 uF in three ranges. Est. cost: $40. Digital capacitance meter. Part 1. Build this 1 pF to 9,999 uF digital capacitance meter. Est. cost: $130. Digital capacitance meter. Part 2. Put your digital capacitance meter to full use by measuring more than capacitor values. Convert your old calculator into a (1) digital capacitance meter, (2) digital ohmmeter, (3) digital stopwatch, (4) shutter-speed tester, (5), tachometer, (6) light meter, or (7) speedometer. Super-fast capacitor checks are made in-circuit using an oscilloscope. Circuit that allows your oscilloscope to be used as a precision capacitance meter. Tips on measuring capacitance and inductance using a grid dip meter. Using the "Kaltek" RC-103 module, along with common components and a simple calculator, to build an instrument to measure resistance, capacitance, temperature, RPM, length, or angles. May also be used as part of a stopwatch or light meter. Testing capacitors using an oscilloscope. Capacitor leakage tester. Also use it to test cables, appliance insulation, and high-voltage diodes. The project is basically a regulated DC power supply with a metering circuit to indicate leakage current. Troubleshooting open or leaky bypass capacitors. Build this L/C meter to accurately measure inductance and capacitance. Est. cost: $150. Part 1. Theory. Build this L/C meter to accurately measure inductance and capacitance. Part 2. Construction and use. Hand-held digital capacitance meter is built from readily available components. Est. cost: $52. Resistance-capacitance decade box. Rotary switches let you vary resistance from 10 ohms to 11.111 megohms and capacitance from 100 uF to 10 pF. Est. cost: $130. Capacitance adapter. Use your digital voltmeter to measure capacitance with this handy adapter. Experimenting with PC-based test equipment. Part 1. Capacitance meter. Capacitance decade box uses binary switching to get from 100 mmf to over .1 mf. Est. cost: $10. Simple capacitor checker used with a VOM or VTM to check capacitors rated at more than 100 volts and less than 1 microfarad. Est. cost: $2. Capacitor switching network delivers from 1 to 24 microfarads with two rotary switches and 10 capacitors. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
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