Charge Pump Gate Driver

Check out my improved gate driver circuit on This circuit can provide high efficiency gate switching for a wide … More

Hardy PIC10 PWM Generator

I modified the DC Signal Multiplier platform to directly output a protected power-boosted PWM signal rather than a DC analog … More

Starting A Layout

This is the start of a more complicated PCB, The white lines represent connections that are required from the netlist … More

Hartian Input Protection

Thought I’d share my approach to protecting signal inputs to sensitive electronics: Input Protection

DC Signal Multiplier

While considering making a constant power DC power supply, I realized that it was quite challenging to come up with … More

Timing Stage Block

While working on the DC Current Limiter, I realized I had a need for a unitized timing stage circuit that … More

24VDC opto-relays

This simple little guy takes two 5 to 24VDC inputs with input current up to 10mA and uses them to … More