More about circuit (738)

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...

1-12-1993 | Many of the less expensive shortwave receivers have no squelch circuit and continue to emanate noise when no usable signal is coming in....

1-12-1993 | Modern integrated voltage regulators are protected against short circuits. but do not give an indication when a short circuit occurs. In...

1-12-1993 | The transmitters is a crystal-controlled, battery-powered, one-chip narrow-band FM (NB FM) model for operation in the 27-MHz band, primar...

1-12-1993 | The circuit in the diagram enables the speed of an electric PCB drill to be controlled with only one preset. As an aside, the rotary dire...

1-12-1993 | The tester generates two different signals for checking a digital storage oscilloscope. The first is a stepped voltage on to which glitche...

1-12-1993 | Resonant 'tank' circuits consist of combinations of inductance (L) and capacitance (C) elements configured in such a manner that a single f...