All items tagged with Current and LED (18)

1-07-1996 | A particular difficulty with LED har displays is the high current drain. LED driver LM3914 controls a chain of LEDS instead of as usua...

1-02-1996 | This battery tester is capable of measuring the capacity of batteries up to 17 V at a maximum discharge current of 1 A. Remarkably, the test...

1-12-1995 | Normally, stroboscopes, which are intended to emit short, intensive light pulses, operate from very high voltages. The present circuit wo...

1-07-1993 | Surface mount technology (SMT) was developed in the 1980s to make possible the use of very small components that have no wire leads or pi...

1-07-1991 | The source, based on a Type TL084 quadruple opamp, is intended to convert an input signal of 0-5 V into a current of G-20 mA. This type...

1-07-1984 | / simple, but effective It is sometimes necessary, or at least desirable, to be able to detect relatively large a.c. currents. One way of do...

1-07-1983 | 17 LED current source If an LED is used in a circuit, the current for that LED is normally set with a limiting resistor. The LED can then be...

1-07-1981 | constant current LED It is normal nowadays to use a LED as a panel indicator whenever possible. However, in keeping with all electronic devi...