Repair Voltage Regulator Control Circuit in Power Supply PCB Card system, both the direct error sampling circuit and the indirect error sampling circuit belong to the voltage regulator control circuit, but there are differences in the error sampling method. Among them, by installing a sampling winding on the switching transformer, then a voltage can be…
Restore Switch Excitation Circuit in Power Supply PCB Card can greatly increase the efficiency of medical instrument PCB board troubleshooting; The switch tube, the positive feedback loop and the switching transformer can form a self-excited switch. This switching power supply is prone to malfunction in the capacitance and resistance existing on the positive feedback loop…
Starter Circuitry Restoration in Medical Electronic Equipment Card power supply system is also very important, in addition to the conventional switching function, the switching tube usually also plays the core role of the switching power supply gap oscillator. Such a switching power supply is called a self-excited switching power supply. Self-excited switching power supply is…
Rework Full Bridge Rectifier Circuitry in Medical Electronic Instrument PCB Repairing. The input voltage in the full-bridge rectifier circuit is 220vac, and the output is 300vdc, which not only changes the current, but also changes the form of current, but during the power up process, full-bridge rectifier diodes are easily damaged. After any full-bridge rectifier…
Medical Equipment Power Supply Circuit Board Repairing is critical since modern medical equipment is more sophisticated and the degree of automation is also significantly improved, it also has higher environmental requirements and failures during use, as a result of that, the incidence of power failures is higher. It mainly analyzes the power supply board fixing…
Single Lead Electrocardiogram CPU Motherboard Repairing Solutions include obvious broken components checking, faulty soldering and adjustable resistor: Find obviously damaged components Carefully look at the components on the CPU motherboard to see if any are damaged or burned. Usually, it is easier to see capacitor expansion or MCU cracking, triode breakdown and burnout, or a…
Faulty Medical Ventilator Controller Board Troubleshooting can be carried out by below methods based upon the technical personnel experience and limited terms: Cleaning and descalingAfter the Medical Ventilator device is used for a period of time, a large amount of dust will be adsorbed on the surface of the controller board. This dust will cause…
Various methods can be taken for Toshiba Computer Tomography Device Mainboard Faulty Inspection, hereby we would like to introduce some of the most effective ones for your reference: Various possible causes are inferred according to the working principle of the Toshiba Computer Tomography and the fault situation, and then it is difficult to eliminate one…
Computer Tomography Controller Board Faulty Diagnotise Methods can be categorized as below:Whether a controller board needs to be repaired or replaced, you must first determine whether it is faulty. As for how to judge? below methods have been summarized based on experience in actual work: First of all, Finding by malfunctional detection program: Large equipment…