Elektor Team (9517)

1-07-1988 | 04 This two-key wiper delay circuit is remarkable for its simplicity and ease of use. The wipe is started by pressing the SET switch, which...

1-07-1988 | 0 4 WIRELESS HEADPHONES (TRANSMITTER) A circuit for the transmission, with good quality, of the sound output of a TV re- ceiver over a coupl...

1-07-1988 | To arrive at a suitable headphone re- ceiver that meets the requirements of being light, battery-powered, and offer- ing good-quality reprod...

1-07-1988 | Modern sealed lead-acid batteries are simplicity itself in use. In contrast to NiCd batteries, they may be charged by connecting them to a c...

1-07-1988 | Maxim Integrated Products have re- cently introduced a series of integrated step-up switching regulators designed 3V LAB =1.31(R i/R2+1) [V]...

1-07-1988 | 04 This circuit provides audible and visible warning when a fish is nibbling the bait. Although this event is fairly easy to signal with ele...

1-07-1988 | EE JULY/AUGUST 1988 This simple and versatile circuit can aid in troubleshooting defective RF ampli- fier circuits. The usable frequency ran...

1-07-1988 | 0 DRIVER FOR BIPOLAR STEPPER MOTORS For some applications, the Universal control for stepper motors (see in) may be considered too extensive...

1-07-1988 | Owners of the Acorn Electron home computer may well object to its interlac- ed, and therefore slightly instable, pic- ture. There is a trace...

1-07-1988 | EE JULY/AUGUST 1988 05 This is one of the very few "one-armed bandits" to which the maxim the sole way to win is not to gamble is not ap- pl...