4511B Common-Anode Display Driver Circuit


Posted on Mar 20, 2013

The use of a switching transistor (like a 2N2222 or 2N3904) allows use of the CD4511B with a common-anode display. should be chosen to provide about 1 mA to drive Ql and Rr should provide enough current to drive the display.


4511B Common-Anode Display Driver Circuit
Click here to download the full size of the above Circuit.

For this circuit, the transistor gain (Hfe) should be at least the ratio of the segment drive current to the current through R.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

AVR LCD Microcontrolled Oscilloscope
Power-line-modem
LED Phototherapy Unit
136 kHz QRSS receiver
Clock Controller circuit
ULTRASONIC CONTROL RECEIVER
Aikido octal mono PCBs and 5687 PCBs and Aikido and 300B amplifiers
MS51C61 holiday lights ASIC circuit
A third harmonic current phase protection circuits



Top