Electricity
- Light bulb, 12v 5w$6.78
- Photoelectric Cell$95.00
- Photoelectric Relay$195.00
- Choke and Resonance Coil, 220V$640.00
- Choke and Resonance Coil$600.00
- Wind Powered Generator$381.10
- Voltaic Cell Kit.$26.51
- Porous Cup.$2.72
- Circuit Board Simulator.$138.55
- Hand Generator, DC.$23.04
- Neodymium Motor Kit.$23.05
- Motor Kit, DC, Each.$8.69