K. Walraven (99)

1-12-1993 | A module is described that enables a mains powered device of up to 275 VA to be controlled bya PC via the I²C bus. Since a direct connecti...

1-07-1993 | The tester has no operating controls and draws current only when the loudspeaker sounds.

1-07-1993 | Halogen lamps are rightly popular because they give a good light and have an excellent efficiency. Unfortunately, they tend to be costly....

1-07-1993 | This low-power UHF FM transmitter is intended for remote control applications such as garage doors and wireless alarm systems. lt is a si...

1-12-1992 | Here is something for microcontroller enthusiasts to grind their teeth on. The 80C552 microcontroller from Philips Components is an upgra...

1-07-1992 | In most small solar power systems using a boiler it is required that the water circulation pump is not switched on until the temperature...

1-07-1992 | Most PCs are provided with a cooling fan to ensure that the internal temperature does not rise unduly.

1-07-1992 | The perpetual difficulty in designing fast NiCd chargers is determining when the battery is charged, that is, when to stop charging.

1-04-1992 | SmalI, compact motors as used in circle saws, lawn mowers and other small electric tools burn out when overloaded. Before that happens, it...