Robust Power Supply for Mobile Applications
Class D Audio Amp – 12W at less than 0.5% distortion
Chimes Generator – up to 4 seconds at 8bit 8kHz
Tag Archives: PCB Design
Led Matrix Display – Internals
Led Matrix Display Internals – LPC1788 CPU, isolated RS485 ports, Isolated Power Supply, Led Matrix Buffers, USB Host
Contract Circuit Design
This power supply designed for mobile plant to resolve issues encountered in a battery charger in original equipment.
The battery charger was bypassed, replaced by this circuit.
Contract PCB Design
Recent contract PCB Layout Design example
New PCB for the LED Matrix Display
This is the PCB for the new Led Matrix Enclosure 
Isolated Power Supply, 2 Isolated RS485 ports, Micro SD Card slot, USB Host, Ambient Light interface, and buffers for the LED Matrix.
Uses a Haoyu LPC1788 module (NXP ARM Cortex M3 with more memory than you can poke a stick at).
We will design a version with Ethernet later this year.