Using BJT transistors as switches - All About Circuits
Aug 26, 2021 · Without the resistor, the base is floating - if your bjt is actually a Darlington, some capacitive, RF antenna effects, or human touching it can cause the LED to turn on/flicker …
Adjusting the electrical length of antennas - All About Circuits
Jun 18, 2025 · This capacitive reactance can be compensated for by introducing a lumped-inductive reactance, as shown in view A. Similarly, if the antenna is too long for the …
What constitutes a "capacitive" load? | All About Circuits
Nov 3, 2020 · 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 …
Calculating Coupling Capacitor Values | All About Circuits
Aug 25, 2023 · Hi: I am experimenting with an emitter-follower circuit. The input impedance is 14.236 KΩ and the output impedance is 32 Ω. The corner frequency is 20 Hz. I have …
High side switching with a Logic Level n-channel Mosfet
Oct 12, 2018 · You cannot use a capacitive bootstrap for the circuit, if I understand the description correctly. Bootstrapping is defeated by the fact the source of the high side FET is never pulled …
Static electricity damaging modern touch screens? - All About …
Jun 11, 2010 · Can static electricity damage modern capacitive touch screen devices?
Capacitive voltage divider problem | All About Circuits
Apr 21, 2020 · Hello, I am working on a project which contains a capacitive voltage divider. I wanted to test it, so I made a simple schematic with 2 capacitors in series and a voltage …
Capacitive Coupling circuit questions - All About Circuits
Jul 20, 2017 · The wires around the wire have both inductive and capacitive coupling but the inductive coupling is very weak with low current in the HV wire, while there is a very high …
angle of impedance - All About Circuits
Dec 5, 2017 · Hello everyone, Can anyone explain to me what is the angle of impedance ? and like why does this angle exist for capacitive and inductive sensors ? I ve been searching for …
Capacitive touch panel detecting false touch - All About Circuits
Jan 21, 2020 · 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 …