Ac voltage measurement

 In order to grasp the change situation of IC ac signal,can be used with the dB jack multimeter ac electric motor 12v 500w voltage electrical motor 24v to approximate measure of IC.Detection multimeter under ac voltage blocking,pens and insert the dB jack;For no dB jack multimeter,need in pens and concatenated a 0.1 ~ 0.5 u F condenser.The method is suitable for the working frequency is low IC,such as television video amplifier stage,field scanning circuit,etc.Due to acmotortrading.blogspot.com the inherent frequency of the circuit,waveform is different,so the measured data is an approximation,for reference only.

Pump and fan - jet pump working principle

 The high pressure working fluid 7,by the pressure vessel nozzle 6 to work,can become high-speed kinetic energy after the nozzle pressure,the liquid (or gas) to go outside of the nozzle. At this time due to the nozzle exit and the diffusion asynchronous motor by high-speed room 2 throat cause vacuum suction chamber 5,so that the suction fluid,eight continue to motor run capacitor come into and work fluid mixing,and then through the diffusion chamber would carry out pressure slightly elevated. Because of the working fluid continuous injection,suction chamber remain a vacuum,so being ac electric motor constantly suction and discharge fluid.Working fluid to high pressure steam,can also be used for high pressure water,the former is called steam jet pump,which is called the water jet ejector. This kind of pump in a refrigeration system is relatively rare.