Hi sir and madam,
I m trying try making auto light on/off using follwing componets.
1. power source 12 dc volt
2.Relay 12 volt dc
3.Transistor BC547 1 no.
4.LDR
5. Resistor to base of transistor.
Please teach me how to find the value of resistor to base.
Thank you
.
I m trying try making auto light on/off using follwing componets.
1. power source 12 dc volt
2.Relay 12 volt dc
3.Transistor BC547 1 no.
4.LDR
5. Resistor to base of transistor.
Please teach me how to find the value of resistor to base.
Thank you
.