Electronics/Scratch pad

Parts list and theory Voltage = potential between two charges. Defined as the derivative of the flux linkage: Current = flow of electrons Defined as the rate of change of the charge: There are 3 parameters in an electrical circuit: Resistance = In a resistor voltage and current are in sync. In capacitors voltage leads current. Capacitors are good as a low pass filter. In inductors current leads voltage. Current equals the negative derivative of the voltage. Inductors are good as a high pass filter. relationship between voltage and current in a circuit in series voltage drops and current stays constant in parallel voltage stays constant and current divides according to the resistance voltage stays constant in parallel and current drops in p pizoelectric = a crystal under compression creates current transformers vacuum tube = electron emitter in a vacuum integrated circuit a semiconductor doped with impurities group 4 elements doped with group 3 and 5 electrons and holes ground applications Resistors in series (Christmas lights, stove) computer 3.5, 5, 12 Volts lamp monitor power distribution (three phase power) radio modem speaker circuit design bandgap cmos flip flop computer parts leakage current