| This hybrid DRM receiver with a single valve and a single transistor features good large-signal stability. The EP95 (US equivalent: 6AK5) ac...
| This hybrid DRM receiver with a single valve and a single transistor features good large-signal stability. The EP95 (US equivalent: 6AK5) ac...
| Superregenerative receivers are characterised by their high sensitivity. The purpose of this experiment is to determine whether they are als...
| Oscillators are ten a penny, but this one has something special. Its frequency can be adjusted over a range of 800:1, it is voltage controll...
| The dip meter consists of a tunable RF oscillator whose resonant circuit is held in the vicinity of a resonant circuit to be checked. If the...
| 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...
| The MAX7378 contains two oscillators and a power-on reset circuit for microprocessors. The Speed input selects either 32.768 kHz (LF) or a h...
| The right crystal controlled frequency at the right time: With this DIP outline oscillator there’s no need to wait for a special crystal to...
| Here’s a recipe to make LEDs produce slow, continuous light effects rather than abrupt changes normally obtained from square-wave drive sign...
| The circuit presented here (in two versions) uses a light barrier as a position sensor. In the first version (Figure 1), the light barrier c...
| In the July/August 2004 issue we published a flickering light for use in models that uses a microcontroller to minimise the component count....