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
Transistor
Triac
Diac
0.1 to 0.5 volt
0.5 to 1 volt
3 to 18 volt
1 to 3 volt
Lead
Silicon
Titanium
Platinum