| Nickel-metal-hybride (NiMH) batteries have now become widely available. A typical one is the 120AAH, which has a capacity of 1.2 Ah in si...
K. Walraven (99)
| Halogen lamps are rightly popular because they give a good light and have an excellent efficiency. Unfortunately, they tend to be costly....
| This low-power UHF FM transmitter is intended for remote control applications such as garage doors and wireless alarm systems. lt is a si...
| The tester has no operating controls and draws current only when the loudspeaker sounds.
| Here is something for microcontroller enthusiasts to grind their teeth on. The 80C552 microcontroller from Philips Components is an upgra...
| In most small solar power systems using a boiler it is required that the water circulation pump is not switched on until the temperature...
| Most PCs are provided with a cooling fan to ensure that the internal temperature does not rise unduly.
| The perpetual difficulty in designing fast NiCd chargers is determining when the battery is charged, that is, when to stop charging.
| SmalI, compact motors as used in circle saws, lawn mowers and other small electric tools burn out when overloaded. Before that happens, it...