DIY Test equipment circuit diagrams - Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Fri, 26 Apr 2024 18:53:49 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.25 Diode Tester Circuit using 741 https://electronicsarea.com/semiconductor-diode-tester-circuit-741/ https://electronicsarea.com/semiconductor-diode-tester-circuit-741/#respond Fri, 07 Jul 2023 15:54:48 +0000 http://electronicsarea.com/?p=2829 This diode tester circuit checks, if the diode is in good condition and also determines its polarity. To accomplish our goal, we use an 741 operational amplifier (IC1) configured as an oscillator.

The post Diode Tester Circuit using 741 first appeared on Electronics Area.

The post Diode Tester Circuit using 741 appeared first on Electronics Area.

]]> https://electronicsarea.com/semiconductor-diode-tester-circuit-741/feed/ 0 How to Extend the Voltage Range of an Analog Multimeter? https://electronicsarea.com/extend-the-voltage-range-of-an-analog-multimeter/ https://electronicsarea.com/extend-the-voltage-range-of-an-analog-multimeter/#respond Tue, 20 Jun 2023 15:10:27 +0000 https://electronicsarea.com/?p=4865 How to extend the voltage range of an analog Multimeter? In order to extend the voltage range, a resistor is placed in series with the multimeter. Calculation example.

The post How to Extend the Voltage Range of an Analog Multimeter? first appeared on Electronics Area.

The post How to Extend the Voltage Range of an Analog Multimeter? appeared first on Electronics Area.

]]> https://electronicsarea.com/extend-the-voltage-range-of-an-analog-multimeter/feed/ 0 Logic probe circuit using CD4001 IC https://electronicsarea.com/logic-probe-circuit-cd4001/ https://electronicsarea.com/logic-probe-circuit-cd4001/#respond Mon, 12 Jun 2023 15:02:13 +0000 http://electronicsarea.com/?p=1287 Logic probe circuit with CD4001 IC. This circuit is implemented with CMOS IC technology and is recommended for testing circuits using the same technology

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The post Logic probe circuit using CD4001 IC appeared first on Electronics Area.

]]> https://electronicsarea.com/logic-probe-circuit-cd4001/feed/ 0 Resistance measurement of delicate components https://electronicsarea.com/resistance-measurement-delicate-components/ https://electronicsarea.com/resistance-measurement-delicate-components/#respond Wed, 17 May 2023 14:45:37 +0000 https://electronicsarea.com/?p=7643 How to measure the resistance of a delicate or sensitive component?

There is a special way of resistance measurement when the component to be measured is very sensitive or delicate.

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The post Resistance measurement of delicate components appeared first on Electronics Area.

]]> https://electronicsarea.com/resistance-measurement-delicate-components/feed/ 0 How to Measure Beta of a Transistor? https://electronicsarea.com/measure-beta-transistor/ https://electronicsarea.com/measure-beta-transistor/#respond Mon, 08 May 2023 13:12:20 +0000 http://electronicsarea.com/?p=1564 How to Measure Beta of a Transistor? (β / hfe of transistor)

The beta (β) is a characteristic of each transistor. This feature is found in the NTE, ECG manuals, etc. These manuals have a minimum or approximate values of the real values. This means that we do not know the real value of the transistor.

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The post How to Measure Beta of a Transistor? appeared first on Electronics Area.

]]> https://electronicsarea.com/measure-beta-transistor/feed/ 0 How to protect multimeter’s 500mA fuse? https://electronicsarea.com/how-to-protect-500-ma-fuse-multimeter/ https://electronicsarea.com/how-to-protect-500-ma-fuse-multimeter/#respond Thu, 04 May 2023 16:08:35 +0000 https://electronicsarea.com/?p=4900 How to protect the 500mA Fuse of a Multimeter?

A very simple circuit that protect the 500mA fuse of a multimeter, due to the high frequency that these are burned.

The post How to protect multimeter’s 500mA fuse? first appeared on Electronics Area.

The post How to protect multimeter’s 500mA fuse? appeared first on Electronics Area.

]]> https://electronicsarea.com/how-to-protect-500-ma-fuse-multimeter/feed/ 0 Continuity tester using 741 IC https://electronicsarea.com/continuity-tester-using-741-ic/ https://electronicsarea.com/continuity-tester-using-741-ic/#comments Tue, 11 Apr 2023 13:58:03 +0000 http://electronicsarea.com/?p=2926 Continuity tester using 741 operational amplifier that operates as a differential amplifier.

A good application for this circuit would be to test welds made on a printed circuit board. It could also be used to test continuity of wires, connections, etc.

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The post Continuity tester using 741 IC appeared first on Electronics Area.

]]> https://electronicsarea.com/continuity-tester-using-741-ic/feed/ 1 Measuring Low Resistances https://electronicsarea.com/measuring-low-resistances/ https://electronicsarea.com/measuring-low-resistances/#respond Wed, 05 Apr 2023 16:02:11 +0000 http://electronicsarea.com/?p=1663 Measuring Low or very low resistances

There are cases where the resistance is too low and a direct use of the ohmmeter is not practical. So a special method is needed

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The post Measuring Low Resistances appeared first on Electronics Area.

]]> https://electronicsarea.com/measuring-low-resistances/feed/ 0 How to Make a Current Flow Indicator? https://electronicsarea.com/electric-current-flow-indicator/ https://electronicsarea.com/electric-current-flow-indicator/#respond Tue, 04 Apr 2023 02:18:56 +0000 http://electronicsarea.com/?p=3572 This Electric Current Flow Indicator gives a visual indication that there is a current flow. Possible applications for this small circuit may be: a battery charger, a voltage power source, etc.

In order to achieve our objective we place 3 rectifier diodes in series, which in turn are in series with the load / battery.

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The post How to Make a Current Flow Indicator? appeared first on Electronics Area.

]]> https://electronicsarea.com/electric-current-flow-indicator/feed/ 0 Op Amp Tester Circuit Diagram https://electronicsarea.com/op-amp-tester-circuit/ https://electronicsarea.com/op-amp-tester-circuit/#respond Tue, 28 Mar 2023 15:50:05 +0000 https://electronicsarea.com/?p=6143 Op Amp Tester Circuit Diagram

Very simple circuit to test 741 op amp or another IC with the same pin configuration. Circuit working explanation

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The post Op Amp Tester Circuit Diagram appeared first on Electronics Area.

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