Tag Archives: psu

Anode power supply for VFD display ( 5v to 80v stepper PSU )

Posted on December 26, 2006 by admin

For my next project (another VFD clock ;), I need a small variable PSU. The main issue with the VFD display, is the power supply. In fact you need 2 differents PSU: a 5v / 100mA for the filament a … Continue reading →

tag: diy, lcd, psu

Simple negative power supply (-5V / -12V / -15V)

Posted on June 10, 2006 by admin

Sometimes you need a simple negative power supply. The best example is the contrast PSU for common small LCD device. Building -5V from a battery or a wallmart supply isn’t really easy. I decided to build a small device that … Continue reading →

tag: diy, lcd, psu