555 Timer?

[devesh]

Why 555 Timer Is So Called As?that's A Very Common Question But I Didn't That In Book.so Help Me Out

[reachrkata]

If you refer to any text book indicating the internal construction of a 555 timer, you'll see that Vcc is divided internally using 3 resistors to get 2/3 Vcc and 1/3 Vcc used later in comparators.

The values of these 3 resistors are 5 kilo Ohm each and hence the name 555.

[Jerry]

Originally Posted by reachrkata

If you refer to any text book indicating the internal construction of a 555 timer, you'll see that Vcc is divided internally using 3 resistors to get 2/3 Vcc and 1/3 Vcc used later in comparators.

The values of these 3 resistors are 5 kilo Ohm each and hence the name 555.

Perfect! The timer gets its name from the resistors!

Jerry