1. Faults Caused by Capacitor Damage Capacitor damage is the most common fault in electronic devices, particularly with electrolytic capacitors. Signs of capacitor damage include: reduced capacitance; complete loss of capacitance; leakage; short circuit. Different capacitors serve various roles in a circuit, leading to distinct fault characteristics. In industrial control circuit boards, digital circuits dominate, … Read more
1. Fault Characteristics and Repair of Damaged Capacitors on Engineering Circuit Boards The faults caused by capacitor damage are the most common in electronic devices, especially the failure of electrolytic capacitors. The manifestations of capacitor damage include: 1. Reduced capacitance; 2. Complete loss of capacitance; 3. Leakage; 4. Short circuit. The role of capacitors in … Read more
1. Fault Characteristics and Repair of Capacitor Damage in Industrial Control Circuit Boards Capacitor damage is the most common fault in electronic devices, particularly with electrolytic capacitors. The symptoms of capacitor damage include: 1. Decreased capacitance; 2. Complete loss of capacitance; 3. Leakage; 4. Short circuit. The role of capacitors in circuits varies, leading to … Read more
1. Measuring AC and DC Current Select the appropriate current measurement range based on the size of the current to be measured, and insert the red probe into the “A” current jack. When measuring DC, the red probe (inserted into the current jack) should contact the higher voltage side, and the black probe should contact … Read more
The microcontroller requires 2 to 5.5V DC power supply, which can be easily provided by batteries or auxiliary power sources. However, in some cases, microcontroller-based products must operate directly from 120 or 220V AC power outlets without using a step-down transformer or resistive voltage drop. Additionally, polyester/ polypropylene film capacitors rated for AC power can … Read more