Transistor
TRIAC
DIAC
SCR
Transformers and inductors
Transistors, diodes and SCRs
Semi conductors and transformers
Resistors, capacitors and inductors
Load regulators
Rectifier circuits
Current limiters
Voltage regulators
Zener diode
Triac
Diac
0.1 to 0.5 volt
0.5 to 1 volt
3 to 18 volt
1 to 3 volt