Despertador Lm741

Este circuito es de gran utilidad utilizamos un amplificador operacional LM741 el cual lo configuramos como comparador de voltaje, por medio del potenciometro establecemos un voltaje de referencia conectado al pin 2 del op-amp, sabemos que la foto-resistencia varía con la intencidad de luz, entonces al momento que no exista luz sobre el op-amp este se mantendrá a la salida un nivel alto, por el contrario si hay suficiente luz que incide sobre la foto-resistencia esta energía pasara el nivel establecido accionando el op-amp y por reacción secundaria, encenderá el led y activara el buzzer, tenemos un switch el cual nos permitirá apagarlo cuando hallamos despertado y encenderlo en la noche, el integrado soporta un voltaje de 5V a 12V en CD.

DESCRIPTION

The LM741 series are general purpose operational

2• Overload Protection on the Input and Output

amplifiers which feature improved performance over

• No Latch-Up When the Common Mode Range industry standards like the LM709. They are direct,

is Exceeded plug-in replacements for the 709C, LM201, MC1439

and 748 in most applications.

The amplifiers offer many features which make their

application nearly foolproof: overload protection on

the input and output, no latch-up when the common

mode range is exceeded, as well as freedom from

oscillations.

The LM741C is identical to the LM741/LM741A

except that the LM741C has their performance

ensured over a 0°C to +70°C temperature range,

instead of −55°C to +125°C.

Connection Diagrams

LM741H is available per JM38510/10101

Figure 1. TO-99 Package Figure 2. CDIP or PDIP Package

See Package Number LMC0008C See Package Number NAB0008A, P0008E

Figure 3. CLGA Package

See Package Number NAD0010A

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applicat

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