Showing posts with label flip. Show all posts
Showing posts with label flip. Show all posts
Monday, November 17, 2014
Flip Flop LED
Flip flop circuit is a series of free runing multivibrator given the burden of LEDs on each side of the transition changes its output signal. Flip flop circuit with LEDs is quite simple, that is prepared with 2 units and 2 units of 2N3904 transistor circuit tank circuit composed by the RC circuit. LED indicators signal a change that is placed on each side of the flip flop will be lit in turn by the fire and extinguished the same as the charge and discharge capacitor. Flip flop circuit is quite simple as shown in the picture below.
Flip Flop LED series
The working principle is the flip flop over when the series voltage source is given then the 10uF capacitor will be charged through R 470 and the LED will then be forwarded to triger the transistor base so that the transistor will turn ON and LEDs. this occurs alternately on each side, so that the LED light will illuminate in turn as well.
Sunday, August 31, 2014
Sound operated flip flop
This is a schema which the status of the output pins of a Flip Flop IC can be toggled by using sound. A condenser microphone is used for picking up the sound.
The first two opamps in the IC1 LM 324 is used to amplify the sound picked by the condenser microphone. The third opamp inside LM 324 is wired as a level detector. When ever the voltage produced due to sound have a level more than that of the reference voltage at pin 5 of the third opamp, its output (pin 7) goes high, triggering the flip flop IC1 CD 4027.As a result the state of the output pins of CD 4027 ( pin 1 & pin 2) toggles for each burst of sound
Notes.
* The schema can be powered from three 1.5 V cells in series.
* The ICs must be mounted on holders.
* The mic M1 is a condenser mic.
* The sensitivity of the schema can be adjusted by varying the preset R9.
* Assemble the schema on a good quality PCB.
* All capacitors must be rated 10V.
Subscribe to:
Posts (Atom)