1.Characteristics of panel shape, measuring range and polarity of watch pen. Digital multimeter has the advantages of small volume, high precision, visual display, moderate price and so on. It has been widely used in electrical and electro…

This article briefly introduces the processing methods of adverse contact phenomenon during using pointer multimeters. The typical feature of the malfunction between the plug and the socket of the test line is that the pointer of the multi…

1. A method for detecting diodes. The range switch of the digital multimeter is set to the position marked with the diode symbol, and the red meter pen is changed to insert "V.Ω "socket is then connected to both ends of the diode using two…