Drive repair op amp and comparator compares the difference between the operational amplifier and a dedicated control board in the inverter control circuit is more common J4-D5B34 / 10-30V, its role would not have me to describe the J, this line than I know. 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 JR80L-Y50AB AC2, 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, the frequency response is one thing JKL31-M4I 5B 24, another at the op amp output is unstable when the comparator, the post may not be able to meet the requirements of logic level. 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. 6ES5095-8FB01 S5 PLC for S5-95F single redundant system, no manual J4-D5B34 / 10-30V, JG40L-Z20PH on China by Shenyang Electric Limited. Shenyang on China Electric Co. (www.zsmsy.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community, and to welcome new and old customers to visit and sincere cooperation for a better future. Shenyang on people - your trusted friend, Company Address: Heping District, Shenyang City, Liaoning Province, Sanhao No. 79 A602, Contact: Wei Song.