Tag Archives: LDR control circuit

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 »