Schematic Diagrams

Useful schematic and wiring diagrams. ✔ ✔ Enjoy electronic circuits, let your idea comes to hardware

LDR control circuit

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 transistor Q1 BC547,Q2 BC337 join […]

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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 of Q1 is not enough […]

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