A Little Christmas Humour

I saw this in an email from http://www.cybersalt.org/entertainment and thought it was worth sharing – Enjoy   Dear Friend This perfectly delightful note is being sent in paper I made myself to tell you what I have been up to.  Since it snowed last night, I got up early and made a sled with old barn wood […]

Benchtop Multimeter

A while back a cheapie digital multimeter I have started to become intermittent so I thought I might get a decent bench top multimeter. I looked around and decided on an HP, no Agilent, no Keysight as they are now called model 34450A 5½ digit one. I have used it since then doing the normal […]

Crystal Replacement

Am I taking a crystal off a board to put a new one on as a repair. No! On boards with miniature surface mount components, a crystal is often the largest item on the PCB. If you are short on space or height, then the problem is compounded even more. To compound the problem if […]

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 […]