| Few things are more frustrating than a circuit which refuses to come to life even after burning the midnight oil trying to find out what is...
| Few things are more frustrating than a circuit which refuses to come to life even after burning the midnight oil trying to find out what is...
| The meter described in this article is suitable as an anemometer for use by yachtsmen and surfers, and also as a flow meter for use in air...
| This inexpensive oscilloscope can be used at frequencies up to 20-30 kHz (optionally up to 1 MHz). It works from 12 V and can thus be use...
| Modern integration techniques make possible the design of a digital frequency meter with a 41/2 -digit LED display not much larger than a...
| Memory upgrades for PCs can present unexpected problems. For instance, if you are upgrading with 4-Mbyte SIMMs (single-in-line memory m...
| A single non-buffered HC inverter can be made to function as a stable oscillator. The crystal may be either a fundamental type (Iow frequ...
| The lead-acid battery forms the heart of the electrical system in any car. If you are on a camping or caravanning holiday, it can happen th...
| Considering the increasing volume of electrical equipment towed along by today's caravanners, people frantically searching for torchlights...
| The CD4046 is an integrated phase-Iocked loop (PLL) with integral voltage-controlled oscillator (VCO) that is used in many digital circu...
| This little circuit is for all cases where you can not hear the doorbell, for whatever reason, but would still like to be alerted if som...