schematic 1 3 volt power source

This circuit diagram illustrates a resource replacement for 3V mercury cells or other small batteries. It has various applications, including powering a front panel multi-adapter with a digital thermometer in a computer. The circuit draws power from the PC, with the power connector cable color-coded: red and black for a 12V supply, and black and yellow for a 5V supply. Due to the high voltage, extreme caution must be exercised to prevent short circuits, and the use of a 100mA inline fuse is recommended.

The circuit is designed to replace traditional 3V batteries with a more sustainable power source derived from a personal computer's power supply. This approach not only enhances the longevity of the device but also reduces the need for frequent battery replacements. The schematic shows the connections between the power supply and the multi-adapter, clearly indicating the appropriate voltage levels for optimal operation.

The red wire serves as the positive terminal for the 12V supply, while the black wire acts as the ground. The yellow wire indicates the 5V supply, which is essential for powering low-voltage components like the digital thermometer. The circuit must be carefully constructed to ensure that the voltage ratings are adhered to and that the components are compatible with the respective power supplies.

To prevent damage from potential short circuits, the inclusion of a 100mA inline fuse is crucial. This fuse will blow in the event of an overcurrent situation, thereby protecting the circuit and the connected components from damage. Proper insulation and secure connections should be maintained throughout the assembly to minimize risks associated with electrical faults.

In summary, this circuit diagram provides a reliable method for utilizing a PC's power supply to operate devices that typically rely on small batteries, enhancing both functionality and sustainability in electronic applications.This circuit is a circuit diagram of resource replacement 1. 3V mercury cells or other small batteries. This has many uses and you can use this circuit in the computer to turn on a front panel multi adapter which has a digital thermometer. This circuit took power from the PC. Power connector cable has a color code, red and black is 12V supply, blac k and yellow is the 5V supply. This is now so high that the absolute care must be taken to avoid short circuit and inline fuse of 100mA is recommended. The following is a schematic drawing: 🔗 External reference