Here is the instruction of how to make a voltage stabilizer for our cars. Although it has many names such as hypervoltage system, ground or volt stabilizer, they are all the same. Their prices range from $60-$220, but you can do it yourself for less than $40. . Personally, I don't know exactly what is inside the box. So what I describe below is based on my knowledge as an electrical engineer.
The voltage stabilizer is used as a filter and a secondary voltage storage for your car. Although the battery itself acts as a large capacitor, it doesn't respond to all current fluxuation in your car. Voltage stabilizer help supplying or absorbing transient current so that electrical inteference is suppressed and more energy from the alternator is stored.
As a result, the engine will run smoother and quiter. Its throttle response will improve. You also get more miles from your gas.
It consists of capacitors connected in parallel. High capacitor value should be use to maximize the filtering effect. Both electrolyict and ceramic capacitors should be use to cover broad frequency range. For battery protection, I add a 3-5A fuse. You can dress it up with some LED lights, but it will just drain up your battery a bit.
Here is the part list:
1. 3-foot 4 or 8AWG wire and 2 ring terminals
2. Plastic enclosure
3. 4 16V Electrolytic capacitors (10,000uF)
4. 4 16V Ceramic capacitors (100uF)
5. a fuse and a fuse holder
6. 2-side sticky tape
7. pre-drilled PCB board
First, Cut the wire and connect each wire with a ring terminal. Then drill 2 holes on the plastic box. Align capacitors in parallel on the PCB board and solder them. Be aware that the electrolytic capacitors have polarity. You should connect all the capacitor's negative terminals to the same point of the PCB board and similary for the positive terminal as shown in the schematic.
Then connect one of the fuse holder port to the positive terminal of the capacitors. Insert the positive wire though the box and solder it the PCB board at the other end of the fuse holder. Afterthat, insert the negative wire though the box and solder it the PCB board. Close the box's lid and your voltage stabilizer will look some thing like this:
Installation: Just connect its + terminal to the + battery terminal and then connect - terminal to the - battery terminal. You will see some spark :twisted: . It would be best to charge the unit with a power supply before you hook it up to the battery. I stick my voltage stabilizer on top of the fuse box using a piece of sticky tape. The ECU needs about 1-2 days to adjust itself once you install the your voltage stabilizer, but you should see some improvement immediately.
The system should last for at least 3-5 years.
Here is the diagram:
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