| This circuit will deliver a number of pulses which is directly proportional to a negative input voltage. The conversion takes...
| This circuit will deliver a number of pulses which is directly proportional to a negative input voltage. The conversion takes...
| This little circuit will produce a DC output that is almost twice the supply voltage. A square-wave input is required of...
| This little circuit will produce a DC output that is almost twice the supply voltage. A square-wave input is required of...
| This simple aerial amplifier can be used to boost the level of weak FM signals. It has a gain of 22 dB, and the extremely...
| This simple aerial amplifier can be used to boost the level of weak FM signals. It has a gain of 22 dB, and the extremely...
| The signal-to-noise ratio of an FM broadcast received in stereo is considerably worse than that of the same broadcast received in mono...
| The signal-to-noise ratio of an FM broadcast received in stereo is considerably worse than that of the same broadcast received in mono...
| This ingenious touch switch is operated, not by skin resistance or capacitance effects, but by heat. The circuit utilises the neg...
| This ingenious touch switch is operated, not by skin resistance or capacitance effects, but by heat. The circuit utilises the neg...
| Mains frequency is often used as a reference for digital clocks and other digital circuits. Unfortunately problems can arise...