Electronics guide: Diode, Capacitor, Arduino Platform, and Electronics Store
A starter PTC (Positive Temperature Coefficient) is a device used in motors and compressors to provide starting torque. It consists of a PTC thermistor embedded in the motor windings or connected in series with the starting winding. The PTC thermistor initially has a low resistance when cold, allowing a high current to flow through the … Read more
A photodiode is utilized in optical communication systems to detect optical signals by converting light into electrical signals. In such applications, the photodiode is typically placed at the receiving end of a fiber optic cable or optical path. When modulated light signals carrying data enter the photodiode, they generate electron-hole pairs within its semiconductor material. … Read more
To test a refrigerator capacitor, you’ll need a multimeter set to measure capacitance. Start by disconnecting the capacitor from the refrigerator circuit to ensure safety. Then, discharge the capacitor by shorting its terminals with an insulated screwdriver. Next, connect the multimeter leads to the capacitor terminals. The multimeter should display a reading close to the … Read more
Breakdowns in reverse bias diodes occur primarily due to the application of a voltage that exceeds the diode’s breakdown voltage rating. When a diode is reverse biased, meaning the voltage across it is applied in the opposite direction to its intended forward operation, a sufficiently high reverse voltage can cause the diode to conduct heavily. … Read more
Old vacuum tube amplifiers are often perceived to sound richer compared to modern transistor and FET (Field-Effect Transistor) amplifiers due to several factors related to their electronic characteristics and the nature of their distortion. Vacuum tubes, or valves, exhibit a different distortion profile compared to transistors and FETs. The distortion produced by vacuum tubes tends … Read more
How do you know when a start capacitor is bad? Determining when a start capacitor is bad can be identified by several signs. One common indicator is difficulty or failure of the motor to start properly. You might hear a humming sound from the motor as it tries to start but fails to turn over. … Read more
Converting current into voltage involves using a resistor to create a voltage drop proportional to the current flowing through it. This method is commonly known as using a “shunt resistor.” By Ohm’s law, voltage (V) is equal to current (I) multiplied by resistance (R). Therefore, placing a known resistor in the path of the current … Read more
Electricity is generated through various methods, primarily involving the conversion of energy from one form to electrical energy. The most common method involves electromagnetic induction in power plants. In these plants, mechanical energy, often derived from steam turbines or water turbines, rotates a generator’s rotor inside a magnetic field. This movement induces an electric current … Read more
A capacitor is an electronic component used in electrical circuits to store and release electrical energy. Its primary use is to temporarily store charge and energy in an electric field between its two conductive plates separated by a dielectric material. Capacitors are utilized in a wide range of applications across electronics and electrical systems. The … Read more
Rectifiers find applications in various fields where conversion of alternating current (AC) to direct current (DC) is necessary. Common applications include power supplies for electronic devices such as computers, televisions, and household appliances like refrigerators and washing machines. In these applications, rectifiers convert AC mains voltage to DC voltage suitable for powering electronic circuits and … Read more