.:madworm:.'s photos with the keyword: 訂單號

This version provides basic capability for microcontroller remote control using 0-5V signals. It takes 0-5V as a set-current intput and spits out 0-5V signals for the DUT voltage and current (both clamped to 5V using Zener diodes). I did NOT include an RC low-pass filter for the input. Either use a micro with a DAC or add a simple filter elsewhere. After completing a device for my own 'happy happy joy joy', I will be having a few boards left over - as usual. This time it will be 4 boards. If it works as expected, the remaining 5 boards will go into another DIY-kit experiment. These will be available via my blog - if you want it or not ;-) Schematic and all design files .

A dummy load. Peak current is 5A. That is currently (hahaha) limited by using only 5V as the reference voltage for the opamp. LTSpice simulations (with a different opamp) showed possible oscillations at a set-current of above 2A. I had to add another BW-limiting capacitor to the opamp that drives the MOSFETs. If I'm lucky the real thing won't need it. If it does I'll have to bodge it. I won't immediately order the V0.2 PCB for that. I only need one working board for personal usage. • BOM • schematic