Switch power source outputs voltage not to stabilize case study
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source:CLAREY CNC Machining
If what you use the voltage that switch power source outputs is not stable, original likelihood has a variety of elements to cause, so we can use a division to judge the reason that it appears only. Switch power source is general and multi-purpose the computer room that communication radical stands and does not have person guard at diminutive, general by pulse width modulation (PWM) control IC and MOSFET are formed, as power source product So must provide batteries management, charge discharge government, the function such as voltage protection. As IDC data computer room commonly used product asks to the control precision of voltage special also tall. The output requirement that the first kind of voltage limits that inputs this switch power source namely exceeded itself transformer to maintain is exorbitant too low perhaps, meeting occurrence voltage does not stabilize this kind of situation, you can check circuit to whether output stability, if stabilize that,designed with respect to what need to adjust transformer. The 2nd kind is certain place protects circuit to be not taken care to spark cause, press too for instance, flow too etc, examine the control node of every protection circuit carefully, see which place was not taken care to be touched by accident. The VDD Wen Bo that still have even if dominates circuit is not stable, had exceeded the control IC requirement of this switch power source, you can adjust this kind of circumstance next power supply voltage perhaps choose to go suitably Ou capacitance will solve. Last kinds of method is the interference of interior of switch power source, for instance voltaic sampling, voltage sampling circuit can cause the output voltage of switch power source be not stabilized. You can check circuit wiring, sensitive circuit wants escape to violate a source. CNC Milling