A flex thin 5 layer board with lots of caps and wire-bonding pads: LHCb UT’s front end PCB prototype.
Tag: download
40 GPIO I2C expander with the PCA9698
There are lots of MCUs with many GPIOs, but apparently, they’re never enough. Wanna 40 more?
Pulse delay generator for triac dimming applications
NE555 and Digital potentiometer based pulse delay generator: trigger it and get a pulse back after some delay!
TRIAC control with Zero Crossing detection
Triac control circuit with built-in zero crossing detection and open collector output
AC-DC 1W Surge protected 5V PSU
AC-DC SMPS converter with <0.3W standby consumption and 4200 Vrms Pri-Sec. isolation in a 42 x 42 x 22 mm package!