Lm3914 Schaltungen. The circuit diagram for a relay driver set up using the lm3914 is given in fig 7. The chip senses the measuring input voltage as a parameter and compares it with reference every time the voltage crosses the certain part of reference the corresponding led glows.
Der strom der leds wird mit dem widerstand r2 schaltplan der an pin 7 angeschlossen ist parametriert. De acuerdo entonces a la resolución lograda se activara cada led dentro de la escala la que usualmente se ubica. It starts with a simple explanation of how it works how to use the formulas for a basic bar graph display and how to transpose the formulas to calculate unknown values.
El circuito integrado lm3914 consta de una serie de amplificadores operacionales en modo comparador con los cuales se activara una escala de leds en pasos que dependerá del voltaje de referencia ajustado en el circuito integrado.
Https youtu be 7avb905f mqin this video the three ics lm3914 lm3915 lm3916 are compared. Substituted for the l e d s the lm3914 can be used to control up to ten functions via a two wire link. When one of the comparators draws current the voltage developed across base emitter resistor r4 to r8 makes the relevant transistor collector c conduct and the asssoci. Subscribe to my youtube channel it s free pcb.
