| 5V and 3.3V from USB port |
How to get 5 i 3.3 Volts from USB port. |
2.92 |
4,573 |
| Automatic battery charger |
Smart scooter battery charger with TLC271. |
2.86 |
25,821 |
| Automatic emergency light |
Automatic emergency light with charger and automatic light switch. |
2.94 |
8,620 |
| Battery charge indicator |
LED based battery charge indicator. |
2.87 |
6,227 |
| Battery chargers |
Li-Ion, Ni-MH, Ni-Cd battery charger schematics and theory about charging them. |
2.90 |
6,947 |
| Car battery voltage indicator |
Car battery voltage indicator with LED. |
2.90 |
6,779 |
| Electronic fuse - DC filter |
Electronic fuse circuit, it can be used as DC filter (low pass filter). |
2.86 |
2,735 |
| High voltage power source for HeNe lasers |
Power inverter from 12V to 2,5kV for HeNe lasers. |
2.88 |
2,352 |
| Kirlian HV power source |
Kirlian HV power source. |
2.87 |
1,862 |
| Lead-acid accumulator charger |
A device that maintains specific voltage across lead acid battery by switching charger ON/OFF. |
2.89 |
10,124 |
| Li-Ion button cell battery charger |
Charges Li-Ion button cell batteries. |
2.95 |
3,910 |
| Linear power regulator |
Linear power regulator. |
2.95 |
5,020 |
| Mobile AT power supply |
Mobile AT power supply for car PC installation. |
2.87 |
3,139 |
| NiCd battery charger v1 |
NiCd battery charger schematics. |
2.87 |
3,793 |
| NiCd battery charger v2 |
Another NiCd battery charger. |
2.95 |
3,811 |
