What is IC 556?

The 556 is a dual timer IC that has two 555 timers in a single 14 pin package. Since this IC has two timers in it so it can be used for both pulse generation and oscillations simultaneously. Each timer has its own trigger, threshold, control, discharge, reset, etc.

Why IC 555 is useful for biomedical circuit?

555 Timer Integrated Circuit (IC) is a monolithic timing circuit introduced by Signetic Corporation in 1970. This device can be easily configured to produce accurate, highly-stable time delays or oscillations, just by adding a very few extra timing components.

How does a 556 timer work?

With two timers in a single package, the 556 is ideal for sequential timing applications. The output of the first timer is connected to the input of the second timer through a 0.001μF capacitor. From the circuit, the pins2 and 6 are threshold and trigger inputs to the first-timer, and pin5 is the output.

Why is 555 called IC?

The 555 Timer IC got its name from the three 5KΩ resistors that are used in its voltage divider network. This IC is useful for generating accurate time delays and oscillations.

How does a 555 timer circuit work?

The 555 timer works by using three 5 kΩ resistors to divide the supply voltage in three. Two comparators compare these voltages to the input voltage, then sets or resets a flip-flop accordingly.

What is oscillator circuit?

An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal, often a sine wave or a square wave or a triangle wave. Oscillators convert direct current (DC) from a power supply to an alternating current (AC) signal.

What are the features of 555 timer?

Features of the 555 Timer IC It can be operated in +5V, can withstand up to +18V. The source and sink current of the output pin is near about 200mA. Trigger Voltage is 1.6 when operating at +5V. Operating Temperature is near about 70 degrees Celsius.