| This miniaturized motor controller uses pulse-width modulation (PWM) for loss-free speed control of d.c. motors up to about 40 amps. The e...
More about Design (644)
| Most of today's 486 and Pentium PCs offer a 'Green Power' function which serves to switch off external components automatically when the c...
| A triangular waveform generator can be converted into a very precise analogue-to-digital converter with the aid of a single resistor. This...
| An 8-bit 50-MHz on PC parallel porl Logic Analyser for home application is always a uselul tool for small digital projects, especially in...
| This design answers the widespread interest in applications involving smartcards. Chip-type telephone cards and credit cards catch the fan...
| The amplifier described is intended as a practice unit for guitar players. Its power output is not sufficient (in most cases) for use duri...
| A power supply is described whose output can be switched to the six most common output voltage requirements and which can provide a contin...
| First, a big 'Thank You' to all of you who have taken the trouble of participating in the Contest. The jury of five had a tough time marki...
| There are many kinds of transistor tester. Whatever kind is used, it is imperative that the transistor is inserted correctly into the test...
| An analogue oscilloscope that is used for measuring slow processes has the drawback that the test time per scale division is relatively sh...