Posted on September 14th, 2014 2 comments
In this tutorial Dave demonstrates the seldom used and often little understood mathematical integration function available on your modern digital oscilloscope. And demonstrates a practical example use for it in accurately measuring the total power consumption of a microcontroller that sleeps and then wakes up and does some processing before shutting down again. By getting the total area under the current curve.
Posted on September 8th, 2014 6 comments
Spoliers & Links:
Programmable Constant Current Dummy Load
SMD Prototype Board
The RoBoard Robot Development Board
LED Strip Driver Board
Madworm projects on Tindie
Conrad Retro Radio Kits
Evoke Flow WIFi Radio OLED Display Repair
MiniDSO Pocket Oscilloscope (a.k.a Seed Studio DSO Quad)
Pi Power Raspberry Pit power adapter
L293D H-Bridge Motor driver chip
Silicate rock used in solar cell manufacture
Posted on September 5th, 2014 6 comments
Some experiments with the Electrocardiogram (ECG) circuitry in the St Jude Pacemaker Monitor Heart Rate Analyser.
Posted on September 2nd, 2014 5 comments
What’s inside an IEC60601-1 medical class 5V mains DC-DC plugpack?
What is the difference between PCB clearance and creepage?
A German FRIWO 5V FW7555M/05 brand medical grade isolation unit vs a cheap Wun Hung Lo consumer brand.
Also a comparative look at transformer construction.
Posted on August 31st, 2014 2 comments
Dave opens his mail