| Standard potentiometers have some unfortunate properties, such as crackling when they get older and unequal tracking in stereo types. A...
More about relay (98)
| The 'Medium power a. f. amplifier uses a relay for the switch-on delay to suppress annoying switching plops. When the amplifier ts switc...
| Bistable relays have the great advantage that once they are in the wanted position they do not need power to maintain that status. Anoth...
| Sensors and transducers are interesting electronic devices to work with, but the snag is that their output signal invariably requires a ma...
| The circutt and the associated software form a quasi intelligent windscreen wiper interval for cars. Although intended for the 80C32 sing...
| 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...
| 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...
| Digital clocks and timers are around us in a multitude of appearances, so it makes little sense these days to build one yourself. However,...
| The use of CW (morse) on a high-power transmitter/receiver presents a serious risk of burned antenna (coax) relay contacts or destruction o...
| The popularity of our series on I²C devices is still growing, and that is why we venture to propose a real-world interface for the I²C bus...