The digital clock uses 7-segment display (7cm length) powered with 5Vdc. It have a boost converter module which step-up the voltage to 10V (required for safe operation of displays). 7-segment is driven using MAX7219 and for powering high-power leds inside segments, driver circuit consisting of UD... view more

• DIY
• Arduino
• Digital clock
• Tiny RTC

The switching power supply us based on UC3845 fixed frequency current mode controller. Output voltage is 12V at 10Amps constant current. primary and secondary are isolated with transformer and optocoupler, so providing safe environment for use. view more

• SMPS
• diy
• 12vpowersupply
• homemade