The LED will become activate when the light level on the LDR will reach the preset level set by the 120K variable resistor. The circuit is using an LDR sensor to sense light. the 120K variable resistor is used to adjust the sensitivity or activation point of the LED. This light sensor circuit shown below is using LM741 IC as a multivibrator in the circuit. This first circuit is a light sensor and the second is dark sensor circuit. There are two circuits show below using the LM741 IC. Replacement / Equivalent / Other Part Numbers: It can also be used in summing amplifiersĪctive filters can be built using this IC input and output, this features saves the internal circuitry of the IC from damage by overload. Moreover the IC is also overload protected from both sides i.e.

Its feature like high gain, low current consumption and wide supply voltage makes it ideal to use in battery operated circuits. The IC can be used in wide range of analog projects. The number of transistors used in the internal circuitry of the IC is 20. The IC is available in many different packages. LM741 is an operational amplifier IC packed with many features.

This pin is used to get rid of offset voltage & balance the input voltage.

The operated current is from 1.7 to 2.8mA.

The internal circuitry is also latch up protected.

It is direct replacement for lm201, MC1439, 748.

It can be operated with both single and dual supply.

Can be operated from wide supply range.

The internal circuitry is designed to stay stable at different temperatures.The IC also contains protection circuitry for short circuit.This IC contains overload protection circuitry at the input & output.Advertisements LM741 IC Features / Technical Specifications:

Lm741 pinout download