Circuits Flashcards
0
Q
What is VR1 and what does it do
A
Variable resistor 1
Sensitivity of circuit
1
Q
Name the 7 components in a circuit
A
L.E.D 9V battery Variable resistor LDR 330 resistor 1k resistor Transistor
2
Q
How does the circuit work
A
Low light level is senses by the LDR which sends a signal to transistor
The transistor switches on the LED
3
Q
What should u do to prepare for soldering
A
Switch on iron Let it heat up Clean with wet sponge Tin the solder With metal wire
4
Q
How to make solder joint
A
Heat joint 4-5 secs
Feed solder to joint
