Portable Power Supply Initial Tests

In my previous post, I gave you my thoughts on my desire for a portable power supply. Since then I have drawn up the circuit with Altium, and laid out the board.  My normal procedure from there is to leave the project alone for several weeks so that I have forgotten the fine detail. You […]

Portable Power Supply

For some time now I have been looking to build a new power supply that was small, low cost portable and capable of operation away from mains power. The desired capabilities are;- Output Voltage 1.0 Volts to 25.0 Volts Maximum current 1.0 Amps Adjustment accuracy 0.1 Volts Current limit adjustable 1.0 mA to 1.0 Amp […]

Amusing Manuals

Amusing Manuals 04 Jan 2012 03:01 I am often amused by the wording in manuals of products from non English speaking countries, and this applies to European as well as Asian and other countries. I purchased a low cost wireless front door bell today to replace the aging one that I had. The front of […]

Solar Hot Water Performance Monitor

Solar Hot Water Performance Monitor Update: 22 Sep 14 After 3 years of operation, the sensors are failing. We are in the process of preparing our house for sale, and shortly I will de-install the Hot Water monitor. I plan to inspect each of the temperature sensors to determine the cause of their failure. I […]