| Here’s a portable instrument to measure self-inductance quickly and accurately. Coil Clinic is a one-stop, autoranging meter with microproce...
Gert Baars (67)
| Big earthquakes are rare events, but every now and then we are startled by small shocks that (luckily!) do not usually have any serious cons...
| Secure wireless switching can be useful in a variety of applications, such as activating or deactivating an alarm system, operating a garage...
| At frequencies below 30 MHz or so, radio transmitters can normally be received over great distances because certain layers of the ionosphere...
| ICs that in the past were far too expensive for the hobbyist tend to be more favourably priced these days. An example of this is the AD8099...
| There are amplifier circuits that have capacitance between the input and output. If the gain is positive, this can lead to oscillations. If...
| In principle, any crystal may be used on one or more of its harmonic frequencies. Harmonic generators based on transistors may operate satis...
| For a collector follower with emitter resistor, you’ll often find that the gain per stage is no more than 10 to 50 times. The gain increases...
| Stepper motors are available in several versions and sizes with a variety of operating voltages. The advantage of this general-purpose contr...
| When soldering SMDs (surface mount devices) onto a circuit board, it is often difficult to keep the tiny component correctly positioned. Wit...