A voltage inverter circuit


Posted on Jan 26, 2013

Our programmable MP3 player has an interface to an LCD with a HD44780 controller. These are alphanumeric LCDs with one to 4 lines of text and 16 to 40 characters per line. However, these LCDs (and LCDs in general) exist in two varieties: those that require a positive LC-driving voltage and those that need a negative LC-driving voltage. The H0420 (the programmable MP3 player that I referred to earlier) only supports LCDs with a positive LC-driving voltage, because it takes its power directly from a common (asymetric) mains power adapter.


A voltage inverter circuit
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Pulse Induction Metal Detector
Logic Checker
Burglar Alarm With Timed Shutoff
Digital Clock Using Microcontroller 89C52/89S52
Video IF circuit TV Schematic Diagram
Simple PWM inverter circuit diagram using PWM chip SG3524
2 x 60 W audio amplifier circuit
Battery SaverCircuit
Sound Effects Kits
Tablet Reminder Uses Watch Module
Solid State Circuits 2
Micropower type 1 SE
Monitoring by the pulse signal constituting the single-shot generating circuit
Eight outputs flash circuit diagram



Top