The automotive generator is the main power source of a vehicle, functioning to supply power to all electrical devices (excluding the starter) while charging the battery during normal engine operation. The purpose of testing the current and voltage of the automotive generator is to assess the charging rate of the generator, which is related to … Read more
Digital Multimeter The digital multimeter is relatively simple measurement equipment. In this article, the author will teach you the correct usage of a digital multimeter. Starting with measurement methods for voltage, resistance, current, diodes, transistors, and MOSFETs, you will better master the multimeter measurement techniques. Tip: Please watch the video in a WiFi environment~ 1. … Read more
A digital multimeter is a commonly used electronic instrument in electrical measurements. It has many special functions, but its main functions are to measure voltage, resistance, and current. How to measure voltage, resistance, and current with a digital multimeter? 1. Measuring Voltage: The most basic function of a digital multimeter is measuring voltage. A typical … Read more
A clamp multimeter is composed of a current transformer and a current meter. The core of the current transformer can open when the lever is squeezed; the wire carrying the current to be measured can pass through the gap of the opened core without being cut. When the lever is released, the core closes. A … Read more
A clamp multimeter is composed of a current transformer and a multimeter. The core of the current transformer can open when the clamp is squeezed; the wire through which the measured current flows can pass through the gap in the opened core without needing to be cut. When the clamp is released, the core closes. … Read more
Search on WeChat Electrical Engineering Learning The clamp ammeter is composed of a current transformer and an ammeter. The core of the current transformer can open when the clamp is tightened; the wire carrying the current to be measured can pass through the open gap of the core without being cut. When the clamp is … Read more
A digital multimeter, a versatile electronic measuring instrument, typically includes functions such as an ammeter, voltmeter, and ohmmeter. It is sometimes referred to as a multitester, multi-tester, multimeter, or three-in-one meter. 1. Buzzer Test Before using the multimeter, perform a buzzer test to ensure the multimeter is functioning properly. Connect the red probe to the … Read more
Digital measuring instruments have become mainstream due to their high sensitivity, accuracy, clear display, strong overload capacity, portability, and ease of use. The digital multimeter is relatively simple as a measuring instrument. Today, I will teach you the correct usage of a digital multimeter. We will start with measurement methods for voltage, resistance, current, diodes, … Read more
A multimeter is an instrument that can measure various parameters, such as alternating current (AC) or direct current (DC) voltage, AC or DC current, resistance, temperature, capacitance, and more. Modern digital multimeters have adopted digital and logic technologies, becoming smaller in size and featuring more built-in functions. By introducing digital technology, digital multimeters can provide … Read more
Figure 1 Experimental Scene Recently, the author has been using Phyphox and ESP32 to capture the current changes when a light bulb is turned on. However, the current change at the moment the light bulb is turned on is quite rapid, making it difficult to draw an ideal current change graph. WeChat Official Account “Physics … Read more