alarm clock using jk flip flops multisim

The IC acknowledges this as a clock signal and quickly toggles its output from its initial pin #3 to pin #2. The moment the trigger is removed, T1 stops conducting, pin # 14 now instantly receives a positive pulse from R1. This brings the IC to a standby position. The operation of this electronic toggle switch circuit may be further understood as follows:Įvery time a positive trigger is applied to the base of T1, it conducts and pulls down pin # 14 of the IC to ground. It simply means that now the sequence toggles from pin # 3 to pin # 2 in a back and forth manner constituting a typical toggling action. However, this proceeding may be stopped at any instant and repeated by just connecting any of the above pins to the reset pin # 15.įor example (in the present case), pin # 4 of the IC is connected to pin #15, therefore, sequence will be restricted and will bounce back to its initial position (pin # 3) each time the sequence (logic High) reaches pin # 4 and the cycle repeats. We know that in response to every logic high pulse at pin #14, the output pins of the IC 4017 are switched high sequentially from # 3 to # 11 in the order: 3, 4, 2, 7, 1, 5, 6, 9, 10, and 11. TRANSFORMER = 0-12V, 500ma, INPUT AS PER AREA SPECIFICATIONS.The whole operation may me understood with the following points: The alternate toggling at its clock input is recognized as clock pulses and is converted into the required toggling at its output pins. a logic high at its output shifts from one pin to the other in the influence of the applied clock at its pin # 14. Referring to the figure we see that the IC is wired into its standard configuration, i.e. The component count here is minimum, and the result obtained is always up to the mark. The first idea talks about an useful electronic flip flop toggle switch circuit built around the IC 4017. 1) Simple Electronic Toggle Switch Flip Flop Circuit Using IC 4017 They may be operated through external triggers either manually or an electronic stage. These are designed to respond to alternate triggers through push-button, and correspondingly operate a relay and a load alternately from an ON state to OFF state and vice versa.īy adding just a handful of other passive components the circuit can be made to toggle accurately through subsequent input triggers either manually or electronically. In our following examples we will learn how to make a 4017 IC and 4093 IC based flip flop relay circuits. When used in practical applications circuits it allows a connected load to alternately toggle from an ON state to OFF state and vice versa in response to an external ON/OFF switching trigger. A flip flop relay circuit works on a bistable circuit concept in which it has two stable stages either ON or OFF.

Alarm clock using jk flip flops multisim