
Teodor Traikov

Bulgaria
Working on VFD clock using standalone atmega328, SN74HC138N (3 to 8 line demultiplexer), CD4026BE (7 segment display driver) and a bunch of transistors. The idea is to switch different grids using demultiplexers, each of them is 3 to 8 line demux and I will wire them in series so they will be 4 t... view more


Teodor Traikov

Bulgaria
Hello guys, I'm working on pure sine wave inverter, and for now I made step-up transformer, but I'm not very sure how to make H-bridge circuit using 4 N-channel MOSFETS for SPWM side, I will use arduino uno for start and after some tests will use attiny85 or other similar microcontroller. T... view more


Teodor Traikov

Bulgaria
I'm working on 500w inverter using SG3525 and IRF1404Z. The transformer is taken from an old power supply. Topology is Push-pull. Primary coil is 2x2 turns with center tap. It's made from 9x0.57mm copper wire. The length is about 120 cm per wire. Seco... view more

