More about relay (103)

1-02-1995 | Few of you will be impressed by the fact that this circiut tuns on a light if you press a switch. The thing is, however, that the light goes...

1-12-1994 | Standard potentiometers have some unfortunate properties, such as crackling when they get older and unequal tracking in stereo types. A...

1-12-1994 | The 'Medium power a. f. amplifier uses a relay for the switch-on delay to suppress annoying switching plops. When the amplifier ts switc...

1-07-1994 | Bistable relays have the great advantage that once they are in the wanted position they do not need power to maintain that status. Anoth...

1-05-1994 | Sensors and transducers are interesting electronic devices to work with, but the snag is that their output signal invariably requires a ma...

1-12-1993 | The circutt and the associated software form a quasi intelligent windscreen wiper interval for cars. Although intended for the 80C32 sing...

1-07-1993 | Voice operated recording (VOR) is a feature found on most hand held memo-recorders. The function of the VOR control is to start the recor...

1-07-1993 | The 8-bit 1/0 chip Type PCF8574 is very popular: it is used, among others. on the AD-DA I/O module, the opto relay card and the LC displa...

1-07-1993 | Digital clocks and timers are around us in a multitude of appearances, so it makes little sense these days to build one yourself. However,...

1-06-1993 | The use of CW (morse) on a high-power transmitter/receiver presents a serious risk of burned antenna (coax) relay contacts or destruction o...