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  • What constitutes a capacitive load? | All About Circuits
    In a reactive load, the inductive reactance and the capacitive reactance have the opposite sign So if the inductive reactance is 10 Ω, and the capacitive reactance is 12 Ω then the load is capacitive
  • How to calculate current limitation in an AC capacitive drop circuit
    The problem with getting higher current out of a simple capacitive dropper is the inherent conflict between two operating conditions: 1) Inrush current, discharged capacitor, peak voltage about 325 Volts 2) Normal operation - requires a Very Large capacitor with a low enough impedance to supply the current
  • Why is a capacitive load necessary for PSU testing?
    Because a capacitive load affects the frequency response of the control loop, and is likely to cause instability in a power supply which has inadequate phase margin
  • Capacitive touch panel detecting false touch - All About Circuits
    A capacitive touch sensor works by detecting the capacitance between the sensor and circuit common of the power supply Grounding the supply common gives a large ground plane enabling the sensor to work
  • Capacitive Voltage Divider - Downsides? - All About Circuits
    Capacitive voltage dividers are really only usable for AC circuits Capacitors block DC, and pass the effects of AC However, attempting to use capacitors in the place of transformers to provide isolation from the mains power is extremely dangerous, as capacitors can (and often do) fail You must use a transformer to safely isolate yourself from the mains power Discussion of hazardous
  • Resistive vs Capacitive vs Other? - All About Circuits
    The capacitive humidity sensors I played with a long time ago used a thin plastic sheet that changes thickness with changes in humidity The surfaces of the plastic were metalized to make a very small value capacitor
  • How does the Colpitts oscillator works? | All About Circuits
    Hello everyone! I'm trying to understand how the Colpitts oscillator works Could someone explain the roles of the capacitors labeled C and C3 in the circuit? What are they used for? Thanks in advance!
  • Capacitive touch trigger as an isolated system - All About Circuits
    I need a way to trigger a capacitive touch screen device (like a tablet) using an isolated system without touching it For example a kid places a small gadget on a tablet screen and the gadget will trigger a capacitive touch on the tablet without requiring anyone to be holding the gadget or the
  • Three Phase Alternators - Capacitive Loads? - All About Circuits
    for a purely capacitive load effect is opposite of purely inductive load and armature mmf advances by 90 deg in phase hence it is now same phase (90-90=0 ) with the main field mmf thus it strengthens it and the effect is magnetising thus causing an increase in the term voltage





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