Posted on Jan 19, 2013

The 4047 is configured as a free-running, astable- multivibrator (oscillator) circuit. That configuration, offers three different outputs. The output pulses at the Q and Q output (pins 10 and 11, respectively) are the same as in the previous two circuits. The third output at pin 13 pulses twice as often as the outputs at 10 and 11. So, the circuit can be used to simultaneously provide both positive- and negative-trigger signals since the Q and Q output are never in the same state, and a clock frequency.

Click here to download the full size of the above Circuit.

Thus, the 4047 can replace both a simple oscillator (the 555, for instance) and a flip-flop in some applications.

Leave Comment

characters left:

New Circuits



Popular Circuits

Touch Switch with MPF102 JFET
Keyboard Matrix Interface
Radio Beacon Converter
High-Output Pulsed-Tone/Light-Activated Alarm Circuit
MOSFET short-circuit protection Schematic Diagram
Middle Frequency Equalizer with Parametric Feature
Simple Switched Servo Driver
servo motor control through keypad
A circuit of a pyroelectric infrared switch application BISS0001
L4960 by a monolithic switching power supply