Drive repair op amp and comparator compares the difference between the operational amplifier and a dedicated inverter is relatively common in the MPU control circuit, its role is not to describe me, and do I know better than this line. An op amp can be connected to become a comparison output of the comparator is a comparison. So why the market two products are sold separately, they have the same and the difference between what is it? 2, the comparator output is generally easy OC level converter; frequency comparator does not fill, SLEW RATE than comparable op zoom, but easy access into the amplifier self-excitation. Comparator open loop amplifier gain is much higher than the average, so the positive and negative terminals of the comparator caused by small differences on the output change. 3, on the one hand the sensor response is imported transformation, and the other at the op amp output is unstable when the comparator, the post may not be able to meet the requirements level logic circuits. 4, the comparator output is open collector, TTL level output is easy, but there is saturation voltage op amp, inconvenient to use. Shenyang, China Electric Co., Ltd. to undertake the industrial automation and control system design, installation, engineering and maintenance; professional maintenance States converter, DC governor, PLC programmer repair operations. Use drive repair electrolytic capacitors note 1, because the polarity of electrolytic capacitors, and therefore can not be reversed in the circuit connection use. In the power circuit atv61 drive repair, when the output voltage is positive then the positive power output of electrolytic capacitors, negative ground, the output voltage is negative then the negative output terminal, positive ground. When the power supply filter capacitor circuit in reverse polarity, because of the filtering effect of greatly reduced capacitance, while causing the power supply output voltage fluctuation, on the other hand because of the reverse energized to make this point is equivalent to a heat resistance of the electrolytic capacitor. When the reverse voltage exceeds a certain value atv31 drive repair, reverse leakage resistance and capacitance will become very small, so energized to work soon, so that the capacitor can overheat and burst damage. 2. Added to both ends of the electrolytic capacitor voltage can not exceed the allowable operating voltage, in the actual circuit design should leave a margin depending on the circumstances, in the design of power supply filter capacitor inverter repair, if the AC voltage is 220 ~ rectifier transformer secondary voltage up to 22V, this time selecting voltage is 25V electrolytic capacitors generally meet the requirements. However, if the AC power supply voltage fluctuations are large and there is likely to rise to more than 250V, the best choice for the electrolytic capacitor voltage above 30V. 3, electrolytic capacitors in the circuit should be close to power the heating element to prevent the acceleration due to heat leaving dry electrolyte. 4, for positive and negative polarity signal filtering, can take two electrolytic capacitors in series with the polar method, as a non-polar capacitor. atv61 drive repair | Shenyang drive repair | Shenyang Shenyang on the people by the people Electric Co. Shenyang Electric Co. on people (www.zsmsy.com) strong, credible, in other industries, such as Shenyang, Liaoning province has accumulated a large number of loyal customers. The company better work attitude and constantly improving people and innovative ideas will lead you to walk hand in hand on the Shenyang brilliant, for a better future!