Light Operated Relay Circuit using LDR / Photoresistor

Light Operated Relay Circuit using LDR / Photoresistor

Light Operated Relay Circuit using LDR.

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

  •  
    128
    Shares
  • 128
  •  
  •  
  •  
  •  
  •  
  •  
How to Measure Beta of a Transistor? (β / hfe of transistor)

How to Measure Beta of a Transistor? (β / hfe of transistor)

How to Measure Beta of a Transistor? (β / hfe of transistor)

The beta (β) is a characteristic of each transistor. This feature is found in the NTE, ECG manuals, etc. These manuals have a minimum or approximate values of the real values. This means that we do not know the real value of the transistor.

  •  
    128
    Shares
  • 128
  •  
  •  
  •  
  •  
  •  
  •