Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
A flip flop changes it's output state from 0 to 1 or vice versa when a pulse is fed to it's input.
It will respond to either rising or falling edge of the pulse depending it is positive or negative edge triggered.
It can store one bit of information and are the basic building blocks of digital electronics.
There are different kind of flip flops like T flip-flop,D flip-flop,SR flip-flop ,JK flip-flop etc. Also we can classify them as synchronous and asynchronous.
If the left transistor (T1) is close the output A1 has high level "1".
Through the base resistor (18kΩ) the left transistor (T2) is hold open, because A1 is "1" and T2 gets positive base voltage. So the output A2 has low level "0". Through the base resistor of T1 the base is hold on low level and hold the transistor close.
If you put the input E20 to ground or give a negative pulse, T2 close and A2 changes to "1". At the same time the base of T1 gets also high level from the base resistor. A1 changes to "0". Now the base of T2 is hold on low level by A1. After the input E20 is not more grounded or the negative pulse is gone, this condition is hold until E10 is grounded or gets a negative pulse.
The conditions at the outputs changes, when a negative pulse arrive at the opposite input.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
