DIY Test equipment circuit diagrams - Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Thu, 26 Dec 2024 15:51:34 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.26 How do I test a Zener diode? – A simple method https://electronicsarea.com/how-test-zener-diode/ https://electronicsarea.com/how-test-zener-diode/#respond Tue, 12 Nov 2024 16:52:44 +0000 https://electronicsarea.com/?p=9153 Procedure to be followed when testing Zener diodes. How to find the voltage of an unknown zener diode

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The post How do I test a Zener diode? – A simple method appeared first on Electronics Area.

]]> https://electronicsarea.com/how-test-zener-diode/feed/ 0 Logic Probe using NOT Gates https://electronicsarea.com/logic-probe-using-not-gates-inverters/ https://electronicsarea.com/logic-probe-using-not-gates-inverters/#respond Tue, 25 Jun 2024 18:11:16 +0000 http://electronicsarea.com/?p=3554 A very simple logic probe using NOT gates. The logic probe allows us to know the logic state of any point in a digital circuit. The signal to be measured is applied to the probe tip input.

The post Logic Probe using NOT Gates first appeared on Electronics Area.

The post Logic Probe using NOT Gates appeared first on Electronics Area.

]]> https://electronicsarea.com/logic-probe-using-not-gates-inverters/feed/ 0 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.

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

]]> https://electronicsarea.com/semiconductor-diode-tester-circuit-741/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 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 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.

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

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

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

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

]]> https://electronicsarea.com/op-amp-tester-circuit/feed/ 0 555 Timer Tester circuit https://electronicsarea.com/555-ic-tester-circuit-pcb/ https://electronicsarea.com/555-ic-tester-circuit-pcb/#respond Tue, 21 Feb 2023 22:34:42 +0000 https://electronicsarea.com/?p=4049 This 555 IC tester circuit, allows us to make sure that this integrated circuit works properly. This same test can be achieved by operating the 555 as astable multivibrator, but this test does not allow observing its operation in detail.

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The post 555 Timer Tester circuit appeared first on Electronics Area.

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