Thursday, February 17, 2011

Resistor or resistance

Resistor
Resistor or resistance are electronic components that serves to regulate current flowing strong. The symbol for the resistor with the letter R, the value indicated by colored rings in ohm (Ω) Click Here!

Trimpot

Trimpot resistance value can be changed by rotating or mentrim. On radio and television, trimpot is used to regulate the amount of current in the oscillator circuit or a series of various types as follows Driver. Click Here!

variable resistor

Thevariable resistor variable resistor is a resistor whose value can be changed by sliding or rotating lever mounted on a component. Click Here!

Monday, November 22, 2010

Schematic differensiator OP-amp

OP-amp differensiator is conducting a series of differentiation in a mathematical operation. The set produces output voltage proportional to the slope of the input voltage. The use of a common set of differensiator is to detect edge ahead and behind the edge of a square pulse or to generate output from input signal square triangle

In the picture above shows a circuit using an op-amp differensiator. The set is almost similar differensiator The set of integrators only resistors and capacitors positions are different. When the input voltage change means that the capacitor currents will remain. Because of all these constant currents flowing through the feedback resistance, then signal at the output of the box, as shown in the picture above

schematic differensiator OP-amp From the equation Vout can be seen that the output voltage is a differensiator deviatif of input voltage versus time multiplied by the time constant differensiator (RCX).
Voltage output (V out) in differensiator OP-amp schematic. Click Here!