| If you ever look at construction notes for building old detector type radios the type of headphones specified always have an impedance of 2...
More about Diode (65)
| There is no such thing as complete protection against overvoltage damage due to a lightning strike. However, the risk of a valuable piece of...
| Apart from the sun, solar power systems cannot work without a reflow protection diode between the solar panel and the energy store. When c...
| Only zener diodes rated at 6 V have a negligible temperature coefficient (TC). At lower ratings, the coefficient becomes negative, and a...
| The three voltages of a threephase supply, L1, L2 and L3 (or R, G and B) are 120° out of phase with one another. When, for instance, the...
| A photo-diode is a p-n diode whose reverse current depends on the amount of light falling on its junction. The reverse current is greatl...
| The “chip card” consists of a small board on which an integrated circuit, IC1, forms the key. The logic circuit for the key is hard-wire...
| The design of the charger is similar to that of many commercially available chargers. The charger consists of a mains adaptor, two resis...
| The circuit of the running light comprises two integrated circuits (ICs), a resistor, a capacitor and seven light-emitting diodes (LEDs)...
| In this article we answer the questions of our readers.