The post How to make a Light Sensitive Sound Generator Circuit? first appeared on Electronics Area.

The post How to make a Light Sensitive Sound Generator Circuit? appeared first on Electronics Area.

The post Light activated switch circuit with LDR and Op Amp first appeared on Electronics Area.

The post Light activated switch circuit with LDR and Op Amp appeared first on Electronics Area.

It is very important to correct the faults in the electrical system of an automobile or motorcycle or other, as soon as possible. This circuit will warn us when this happens.

The post Blown Fuse Indicator Circuit using one transistor first appeared on Electronics Area.

The post Blown Fuse Indicator Circuit using one transistor appeared first on Electronics Area.

When the temperature is above the pre-set temperature level, LED D1 will light up and if it is below, LED D2 will light up.

The post 2 LED Temperature Change Indicator with LM35 & 741 first appeared on Electronics Area.

The post 2 LED Temperature Change Indicator with LM35 & 741 appeared first on Electronics Area.

Rain detector using two transistors. Circuit that aims to alert the beginning of the rainfall. Its few components make it an interesting and easy project.

The post Rain Detector using two Transistors first appeared on Electronics Area.

The post Rain Detector using two Transistors appeared first on Electronics Area.

This circuit uses, as a main component, an LDR (photoresistor). An LDR changes its resistance value depending on the amount of light it received. The more light means less resistance, the less light means more resistance.

The post Dark detector circuit using LDR and relay first appeared on Electronics Area.

The post Dark detector circuit using LDR and relay appeared first on Electronics Area.

The main elements of this circuit are the 555 integrated circuit, working as an astable multivibrator and an LDR which is used as darkness sensor.

The post Darkness detector circuit with audio output using 555 first appeared on Electronics Area.

The post Darkness detector circuit with audio output using 555 appeared first on Electronics Area.

The LDR varies its value (ohms) depending on the amount of light that illuminates it. The more light less resistance and less light more resistance, A potentiometer is used to control the light level that activate the relay

The post Light Operated Relay Circuit using LDR / Photoresistor first appeared on Electronics Area.

The post Light Operated Relay Circuit using LDR / Photoresistor appeared first on Electronics Area.

It can be used to illuminate the main entrance of the house, a showcase that must be kept lit at night, an unsafe area at night, etc.

The post Light detector circuit using transistors and relay first appeared on Electronics Area.

The post Light detector circuit using transistors and relay appeared first on Electronics Area.

Very simple circuit that amplifies the current signal generated by a photodiode and transforms it into voltage with a controlled gain

The post Photodiode Amplifier Circuit – Current-to-Voltage Converter first appeared on Electronics Area.

The post Photodiode Amplifier Circuit – Current-to-Voltage Converter appeared first on Electronics Area.