Thomas Scarborough (13)

1-12-2009 | compilation of circuits for the odd ‘learn-while-u-tinker’ hour you should be able to claim for yourself this December. Most of the parts us...

1-05-2007 | The circuit described in this article is incredibly sensitive to changes in the magnetic field. It can be used to detect earthquakes, but it...

1-07-2005 | Sometimes the need arises to construct a really simple oscillator. This could hardly be simpler than the circuit shown here, which uses just...

1-07-2005 | This circuit is for an unusually sensitive and stable proximity alarm which may be built at very low cost. If the negative terminal is groun...

1-07-2005 | The five-stage linear dot-mode bargraph display shown in here has a number of distinct advantages, which may be summarized as:1. the resisto...

1-07-2005 | To the best of the author's knowledge, the metal detector shown here represents another new genre. It is presented here merely as an ex...

1-11-2004 | This month we invite all fans of the ‘kitchen table’ series to build a classic auditory illusion that has had psychologists and neuroscienti...

1-10-2004 | The principle behind a metal detector is really quite simple. The proof: this article, which demonstrates that a detector may be built in a...

1-07-2004 | Sometimes the need arises for a simple, gated, pulsed alarm. The circuit shown here employs just four components and a piezo sounder and is...

1-10-2003 | This design is arguably the simplest IB (induction balance) metal detector that could be built from off the shelf components. The IB method...