Title | Description | Date |
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Components
| Passive components in electric / electronic horology | Feb 2008 |
Clock Motors
| Explanation of the many types of motor & how they work | Aug 2007 |
Kundo Battery Clocks
| Details of the repair of a Kundo Electronique clock motor (Now includes Junghans) | Apr 2014 |
Old Synchronous Motors
| Many are extremely unsafe, but this article shows how to make them safe to use | Jan 2009 |
Frequency Changer
| 50Hz clocks on 60Hz or vice versa. How to do it and maintain mains accuracy | Jan 2009 |
Build a Synchronous Clock
| Using a quartz clock motor and motion works, you can make a synchronous clock | Aug 2008 |
Driving Quartz Motors
| Quartz clock motors can be useful, but are not always as easy to drive as you might imagine | Oct 2007 |
Build a Synchronous Clock
| Construction details of my battery operated "free pendulum" clock | Apr 2014 |
Mains Supply
| 1.5V regulated power supply for battery clocks | Sep 2009 |
Spark Quench Circuits
| How to kill the small arc that erodes contacts - tricks and pitfalls. | Apr 2010 |
1s Timebase
| Build a 1 second timebase, using a cheap quartz clock circuit board. | Mar 2015 |
30s Timebase
| Build a 30 second timebase, based on the principles shown in the previous article. | Jan 2017 |
Alternate Impulse Motors
| Alternating polarity clock motors - how they work and how to drive them. | Jan 2010 |
Arduino For Slave Clocks
| How to use an Arduino to drive slave clocks. Includes full Arduino code for alternating and single polarity clock motors (Contributed Article) |
Feb 2021 |
|
Magnets, Magnet Tools and Techniques | |
|
Demagnetiser
| Build a demagnetiser that can demagnetise most things in 50 milliseconds flat! | May 2010 |
Magnet 'Charger'
| A powerful magnet revitaliser, using large electrolytic capacitors | Jun 2008 |
Fluxmeter
| Now that you've recharged your magnet, measure the results. | Nov 2008 |