More about circuit (744)

1-09-1994 | Many small and older cars are not provided with a rev counter, which is a pity, because this instrument is veryuseful tor driving with tue...

1-07-1994 | The circuit gives a coarse indication of the frequency by a tricolour LED, the Type LF-59EBGBW from Kingbright. When the frequency of the...

1-07-1994 | This little circuit is for all cases where you can not hear the doorbell, for whatever reason, but would still like to be alerted if som...

1-06-1994 | Could the authors of Practical Method of Designing RC Active Filters which appeared in the March 1955 issue of IRE Transactions on Circui...

1-06-1994 | Time is money, and the shorter one has to wait tor an EPROM to be erased, the better. The circuit described here will save you time because...

1-05-1994 | In radio frequency electronics a mixer is a non-linear circuit or device that permits frequency conversion by the process of heterodyning....

1-04-1994 | A flash tube control circuit is described wh ich is suitable for playful as weil as serious applications. The unit has a flash frequency o...

1-03-1994 | Although ready-made printed circuit boards are available for most projects described in this magazine, there are cases where a 'real' peB...

1-01-1994 | The switching unit described here is capable of controlling up to seven mains-powered loads with the aid of commands received via telephon...

1-12-1993 | When a battery is charged by a solar panel during the day, it may discharge via that panel after sunset. This may, of course, be prevente...