1. I

    Delta connected load on- off control

    Hi, I have to on-off switch a AC load, which delta connected 3 phase AC source. Consider the load that will be switched on-off is Z1. To achieve on-off switch, I think use zero cross triac opto driver and triac for both Phase-R and Phase-Y. But I am confused. When Phase-R reaches zero point...
  2. Lambo Av

    Voltage Magnitude, Phases, Current for Bus (Load Flow)

    Say there are 3 buses of: Bus 1: Slack bus with a voltage source of E=1.0 and phase of 0° Bus 2: a generator and a load. Bus 3: a load. The line impedance are given below: z12 = 0.05 + j0.1 z13 = 0.02 + j0.05 z23 = j0.05 z11 = -j100 z22 = infinity z33 = -j40 The generators and loads are given...
  3. U

    Phase Drifts Detector

    Hello, everyone! I have a problem with approaching a university project, which aim is to detect the phase drifts (difference, deviation) between a mains supply voltage and either an internal reference and externally input reference signal. The system should be micro-controller based (MSP430)...
  4. S

    Phase and Gain of transimpedence amplifier and effect of input impedance

    Hello, I am new to hardware design. I am designing measurement circuit for Impedance Spectroscopy of electrochemistry cell. I need to measure the current coming from electrodes which have range from few milliamperes to few nanoamperes. as literature suggested, the equivalent circuit for...
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