/stocksoundandelectronics
mrstockELECTRONICS
http://www.mrstockinterfaces.com/groups/wiki/wiki/89c0b/Basic_Electronics.html
flow = curent pressure= voltage
2 wires to connect to piezo
circuits
normal transistor= current flow resistor fat transitro= voltage control transistor (the voltage on the gate affects )
piezo cristal has high resistance to low signals and low to high res
circuit=> RESISTORS , CAPACITOR, FET
RESISTORS
resistors offfer resistance to electronic current
CAPACITOR is used to decaple the signal (they can be used as filter, they allow dc signals not topass , low chaning not so much and hight chanign more) is a disconnection
if the thing is charged u can have a pressure diference without flow
BASIC ELECTRONICS
basicelektroniks working with electrons
electric charge, current , field
El.charge= the ammount of electrons involved measured in Coulomb (C). 1 Coulomb contains 6.022 ? 10 óôçí 23ç electrons.
Electric Current is the movement of an electric charge. Anytime electrons move, this is called current. Current is measured in Ampere (A) which is defined as Coulombs per second [ 1A = 1C / s ] .So; when 1C of electrons flow through a wire in 1 sec, the wire carries a current of 1 A. The maximum current a circuit can handle is determined (among other things) by the thickness of the wires.
Electric Field or Potential is the amount of Energy converted or transferred by the electrons moving.
Ìeasured in Volts (V). When 1C loses 1V of potential, 1 Joule of energy is released.
Like water flowing downhill under the influence of gravity, electrons will flow in the presence of an electric field (or by means of
certain chemical reactions..). The electrons themselves are negative particles, and so are repelled by the negative pole of the field,
and attracted by the positive pole of the field.
In an electric field, electrons will flow from - to +
Electric current is defined as flowing from + to -
Electric current is flowing in the opposite direction to the electrons that are causing the current in the first place!*