Tag Archives: LDR control circuit

Sun light control automatically using SCR

This circuit controls the turn the power off consumption in home automation. If it is daytime working to break the circuit. But at night is connected to a working electrical AC 220 volts. Such as the opening and closing of the bulb. This lamp will illuminate when the light bulb… Read more »

Daylight sensor switch circuit.

My wife would like to control an Air pump (looked like this projects), to works only daylight hours. To save electricity and help extend the use of the air pump. I so select a light switch controller Because there are less devices and easily build. Which is circuit diagram below:… Read more »

Electronic mailbox front door

Schematic Diagrams      Comments Off on Electronic mailbox front door

This circuit is integrated electronic mailbox,A front door open.And when people open. Cabinet photo detector attached to the light, it will work. Operation of the circuit.While not open the mailbox PHOTO1 will not bias. The voltage at C2 is approximately 9 volts, it is charged through R3. The BE voltage… Read more »

Light Relay Switch By BC547 & BC337

Schematic Diagrams      Comments Off on Light Relay Switch By BC547 & BC337

This circuit is simple form but can be useful various such as The alarm circuit, an more electronic control circuits such as ON-OFF electrical equipment, the flash light control circuit or etc. following with do you want. Function of the circuit From the circuit in Figure 1 that see two… Read more »

Electronic mailbox front door

Schematic Diagrams      Comments Off on Electronic mailbox front door

This circuit is integrated electronic mailbox,A front door open.And when people open. Cabinet photo detector attached to the light, it will work. Operation of the circuit.While not open the mailbox PHOTO1 will not bias. The voltage at C2 is approximately 9 volts, it is charged through R3. The BE voltage… Read more »