Brilliant Light Detector Circuit Diagram
The circuit shown in figure 1 is a very simple light sensor circuit that will activate an led when the ldr in the circuit receives light.
Light detector circuit diagram. The ldr circuit diagram works like this. It comprises of a transistor potentiometer ldr light dependent resistor and a relay with a protection diode. The safety precautions were recommended by the well pcbs and were followed.
How the ldr circuit diagram works. A voltage divider made using ldr ldr1 and a potentiometer rv1 b output led d1 in our switching circuit made using a transistor bc547 q1. The circuit of light detector is very simple and easy to build with very few components.
This is a simple light sensor circuit diagram which activates a relay when light incident on sensor is above threshold this circuit cost less. 3 another simple pir based alarm circuit. In the previous circuit we have seen a simple light detector using ldr and an op amp.
2 x bc547 npn transistors. First and foremost we must give power to the 4011 nand gate chip. Working of the circuit is simple when the.
All the current will instead pass through the ldr and the potentiometer. A 230v ac supply is provided to the load in this case the load is represented with a lamp. Led light sensor circuit diagram.
Light detector circuit using a nand gate the schematic diagram of the light detector using a 4011 nand gate chip is shown below. It uses just two transistor to perform the light detection operation. Switch and hence any ac and dc appliance connected with the relay will become activated.