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

Stepper Motor Encoder Circuit
Sawtooth Converter
timer Simple Metronome Circuit w/ Linear Pot Control
TS555 Timer
LCD Module in 4-bit Mode
Magic Lights
Electronics Mosfet power amplifier schematics
The General Electric XT-1-A AM transmitter
Fast Voltage-Driven Current Source
Power MOSFET Bridge Rectifier
CD4060 production time controller circuit diagram
Homemade whole integrated circuit amplifiers 01