Parphrase for TARIQ PART 1 AND PART 2 - Essay Example

This implies that the pin will not generate more than 200mA. Pin 6 – is chip’s threshold pin. The function of this pin is to determine rail voltage’s two thirds so that a LOW state output can be achieved only when Pin 2 is in the HIGH state. The impedance of Pin 6 is quite high so that it triggers at nearly 1uA. A 555 timer based oscillator can be defined as a circuit which gives waveforms running highly and clear free. It is possible to adjust these waveforms’ output frequency by making a connection between an RC circuit, one capacitor, and two resistors.

This circuit is a general relaxation oscillator’s type that gives out stable square waveforms. The frequency of these waveforms is fixed at nearly 500 kHz. It may have duty cycles anywhere between 50 and 100%. This oscillator circuit consists of a re-triggering mechanism that is made by interfacing the trigger input Pin 2 and Pin 6 that is threshold voltage. This is unlike the monostable circuit which terminates after elapse of the pre-set time. As a result, the device becomes a stable oscillator circuit.

Pin 2 and Pin 6 are interconnected in the above oscillator circuit. This results in the development of a self-triggering mechanism in the circuit in every operation cycle so that the operation of the circuit becomes a free running oscillator. Another name for this circuit is voltage-to-frequency converter because it is possible to change its output frequency by changing the applied input voltage. Pin 5 is generally the pin of voltage control. The primary function of Pin 5 is trigger control and control of the threshold levels.

The voltage across Pin 5 is generally Vcc’s two-third because of the existence of a voltage divider that is internally built. Upon the application of an external voltage to this terminal, it is possible to change the control voltage. The timing capacitor is the voltage across the