Up-Controlled Negative Voltage Converter


Posted on Mar 11, 2013

This circuit was used to produce a variable negative voltage for contrast control of an LCD displa


Up-Controlled Negative Voltage Converter
Click here to download the full size of the above Circuit.

y. A 74F374 generates a square wave that is ac coupled to a rectifier and load. By using the uP clock and data from the processor bus, and properly timed load signal, the dc level generated can be controlled by the uP.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Digital Storage Oscilloscope Adapter
long range stable fm transmitter
EPROM adapter for ATMEL 89 Series Flash Microcontroller Programmer
Periodic Timer Timing
MICROPOWER METAL DETECTOR
How to improve the selectivity of the FM radio receiver



Top