Elektor Team (9510)

1-07-1984 | for battery-operated equipment The low-power switching regulator type 4193, which is housed in an 8-pin miniature DIL package, is designed s...

1-07-1984 | variations on an old theme Although we would not like to make a habit of it, going back to an old design when new components become availabl...

1-07-1984 | rim with LED indication An event counter, as could be ex- pected, counts events, or, to be more precise, it counts the occur- rences of a pa...

1-07-1984 | for the Z80 CPU card The Z80 program commences to run at reset on address 0000. It is, however, desirable for many applica- tions to access...

1-07-1984 | one bit frequency meter The circuit described here gives a visual indication whether the rate of an incoming pulse train is above or below a...

1-07-1984 | for frequencies up to 500 kHz The design for a fast analogue to digital converter shown here clearly shows that this type of circuit does no...

1-07-1984 | 4096 bytes in two EPROMs ICs with the exception, of course, of CS. The enable signals for this pin are taken from the outputs of the 74LS00....

1-07-1984 | also usable for other audio signals This circuit is used together with the receiver described elsewhere in this issue to form the simplest i...

1-07-1984 | July/august 1984 A video signal + sync separator = sync of a video signal. When supplied signal with a composite video signal of at least 0....

1-07-1984 | for home and garden A periodic alarm signal has many ap- plications in daily day life: "lights off" indicator in cars, water level in- dicat...