electronic_component_testing_cheatsheet
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electronic_component_testing_cheatsheet [2022/02/23 12:35] sausage |
electronic_component_testing_cheatsheet [2022/02/23 12:46] sausage |
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| When doing a repair job, it's nice to have a handy testing cheatsheet for a range of electronic components. So far I haven't found one, so I created my own here which covers everything from very basic fuses and resistors to MOSFETs, even Gas Arrestor Tubes. All using a multimeter and other tools. I've tried to cater for absolute beginners to intermediate hobbyists. | When doing a repair job, it's nice to have a handy testing cheatsheet for a range of electronic components. So far I haven't found one, so I created my own here which covers everything from very basic fuses and resistors to MOSFETs, even Gas Arrestor Tubes. All using a multimeter and other tools. I've tried to cater for absolute beginners to intermediate hobbyists. | ||
| - | My favourite tools are the Anmeg AN8009 mutimeter and GM 328 component tester. You can find them both on Aliexpress. | + | My favourite tools are the [[https://www.aliexpress.com/wholesale?SearchText=AN8009 | Aneng AN8009 multimeter]] and [[https://www.aliexpress.com/wholesale?SearchText=gm328 | GM 328 component tester]]. You can find them both on Aliexpress. |
| {{:component-cheatsheet:anmeg-an8009.jpg?direct&200|}}{{:component-cheatsheet:gm328.jpg?direct&300|}} | {{:component-cheatsheet:anmeg-an8009.jpg?direct&200|}}{{:component-cheatsheet:gm328.jpg?direct&300|}} | ||
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| An OL reading means ''open line'' or ''broken connection''. No current will pass, so it's a bad resistor. | An OL reading means ''open line'' or ''broken connection''. No current will pass, so it's a bad resistor. | ||
| - | An almost 0Ω reading is a short. Of course, there are very low value resistors, for example BROWN BLACK SILVER GOLD, totaling 0.02Ω, so always check the resistor chart to be sure. | + | An almost 0Ω reading is a short. Of course, there are very low value resistors, for example BROWN BLACK SILVER GOLD, totalling 0.02Ω, so always check the resistor chart to be sure. |
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| ===== Switches ===== | ===== Switches ===== | ||
| - | You can never under-rate the testing of a switch. Switches can break: it's continutity can fluctuate. A switch can be ''normally open'' (the most common type) or ''normally closed''. | + | You can never under-rate the testing of a switch. Switches can break: it's continuity can fluctuate. A switch can be ''normally open'' (the most common type) or ''normally closed''. |
| {{ :component-cheatsheet:switch-testing.png?direct&400 |}} | {{ :component-cheatsheet:switch-testing.png?direct&400 |}} | ||
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| The continuity tester on your multimeter is the mode to use. | The continuity tester on your multimeter is the mode to use. | ||
| - | - If it's a normally open switch, ensure there is only continutity when it is pressed. | + | - If it's a normally open switch, ensure there is only continuity when it is pressed. |
| - | - If it's a normally closed switch, ensure there only continutity when it is not pressed. | + | - If it's a normally closed switch, ensure there only continuity when it is not pressed. |
| - | An example of an interesting switch break [[vulcan_dishlex_milano_dishwasher_repair|in a recent dishwasher repair]]: with a microswitch that would click when pressed... it sounded like it was activated, but unless you pressed it further, there was no continutity. Needed replacing. | + | An example of an interesting switch break [[vulcan_dishlex_milano_dishwasher_repair|in a recent dishwasher repair]]: with a microswitch that would click when pressed... it sounded like it was activated, but unless you pressed it further, there was no continuity. Needed replacing. |
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electronic_component_testing_cheatsheet.txt · Last modified: 2024/05/19 04:40 by sausage
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