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Hello everyone. Today I will tell you how to make a great LED and zener diode tester. To create it, you will need a cell phone charger, multimeter probes, and a digital voltmeter. I will explain in detail how to connect them together and show you the circuit. You can buy an LED voltmeter here: https://alii.pub/6qrtzp You can buy an LCR-T4 radio components tester here: http://alii.pub/67qiyt #diy #electronics #withyourhands #circuit #led #electronics #diycrafts #runing #homemade #howtomake #ledtester