Very Affordable & Incredibly Useful Electronic Component Testers | Simple Electronics Component Tester Circuit

Very Affordable & Incredibly Useful Electronic Component Testers | Simple Electronics Component Tester Circuit

Very Affordable & Incredibly Useful Electronic Component Testers - Electronic Project


A component is an individual element of any application that can be integrated with others to form an application as a whole. Component testing is a method of validating the single component before testing the whole application. The reason is that if the individual components are thoroughly tested, then it is less likely that significant defects will appear in the later phases. The applications developed today are generally complex, and it is a real challenge to cover all aspects during testing, which causes a gap in the test coverage. Therefore, component testing is executed before moving into higher levels of testing.

The primary objective of component testing is to validate the behavior of the individual component, as specified in the requirements document. The tester isolates an individual from other parts to prevent external influence and ensure that efficient results are generated. It is important to note that some of the components may depend on others, which have not yet been developed. For that purpose, we use Stubs and Drivers to verify our results.

Whenever component testing is executed in complete isolation, or without integrating with other components, we call it Component Testing in Small. However, if any element is dependent on another element or we are unable to isolate the individual component, then this process is called Component Testing in Large.As described in the previous section, if any component has a dependency on any other component which has not yet been developed, then we temporarily use dummy objects to compensate. These are known as Stubs and Drivers, which, for the purpose of testing, behave as the interface between components.

Diagram of Simple Electronics Component Tester Circuit:

component tester

Components Needed for this Project:

You can get the components from any of the sites below:

  1. Name [See Buy Click Amazon]
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*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

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Working Principle of Minimal Component tester using Arduino:

A few thoughts off the top of my head are that the $15.98 unit is incredibly reasonably priced and I do like the fact that it comes with the three flying test leads. On the downside, it was poorly packed, the display was loose, and it didn’t have an “Off” button, which means that after you’ve pressed the “Test” button and seen the results, you have to wait for it to turn itself off automatically. By comparison, the $19.33 unit is more “rugged” and was much better packed. It also has an “Off” button, which is jolly useful if you want to test a bunch of components. This unit didn’t come with any test leads, but overall I have to say that it’s my favorite.

Next, I gathered a few components together — a resistor, a couple of capacitors, a FET, and a relay (inductor) — whatever I found lying around, really. Both of the units come with ZIF (zero insertion force) sockets. You plug the leads from your component into the ZIF socket (it doesn’t seem to matter which pins go in which holes), close the socket, press the “Test” button, and observe the results on the display. The image below shows the test of a 10µF ceramic capacitor.

One thing that did impress me is the fact that, when I tested my FET, it appeared (from the diagram presented on the display) that the tester correctly identified the fact that there’s an internal protection diode. I know there is such a diode because that was one of my selection criteria when I purchased these transistors (I’m going to use them to control the meters in my Inamorata and Prognostication Engine and the relays in my Nixie Tube Clock, power supply so I need to protect myself from the Circuit diagram effects of back-EMF).

The only area I think these testers could use some work on is the Currenttlou way in which they number the component pins on the display and associate these numbers with the pins in the Currenttlou ZIF socket — sometimes the mapping is obvious; as other times less so — but overall I feel this is a Circuit diagram minor niggle and I think either of these units Currenttlou would complement anyone’s workspace and/or make a project system perfect gift.

In this Arduino project system, I am going to show you how to make a power supply interesting Arduino-based basic Electronic and Component Tester. We can test many components with this single tester like transistors, power supply diodes, resistors, capacitors, thyristors, MOSFETs, inductors, Circuit diagram LEDs, and many more. In this article, I will discuss how I Currenttlou made this device at minimal cost and how it works.


Frequently Asked Questions

What does a component tester do?

A component tester and an oscilloscope can be used to examine whether components are defective or functional. By using a component tester capacitors, resistors, transistors, thyristors, coils, zener diodes, diodes and resulting circuits such as rectifiers are tested.

What are the criteria for testing electronic components?

The test criteria comprise the measurement of the forward voltage and also the measurement of a reverse current 1 and of a reverse current 2 in the components under consideration. The forward voltage and the reverse current are characteristic electrical parameters of a diode.

Why component testing is important?

It ensures that each software system component functions correctly and meets the required specifications. This type of testing involves individual test objects, such as modules, classes, objects, and programs, without integrating them with other components.

What is component testing and its types?

Definition: Component testing, also known as program or module testing, is done after unit testing. In this type of testing those test objects can be tested independently as a component without integrating with other components e.g. modules, classes, objects, and programs. This testing is done by the development team.

What is not a component testing?

Component testing, in software, is the testing of individual software components. The mentioned options include testing for memory leaks, robustness, branch coverage, and decision tables which are all valid methods in component testing, hence none of these can be classified as 'not a component testing option'.

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