MODIFICATIONS TO THE COMPUTER POWER SUPPLY & REPAIR

 

Given the current high prices of travo, to save costs, not hurt us to use this trick to fulfill our will kebutuhun power supply.
In addition to the cheap trick can also produce a large amperage power supply for us.
This trick is very useful for the hobby colleagues (term) both in the 2 meter or on FM. We all know that the plane is the consumption of the transmitter requires a power supply with large currents.
Hopefully this trick useful for us all.

The first is that we butukan Supplynya computer power that has been unused. We can buy a flea in the handyman (rosok). at most it costs about 10 thousand. Keep in mind that the computer Power Supply is a large discharge current at a voltage of 5 Voltnya. While the current 12 Volt out rather small. While we need is a voltage of 12 volts. For that we need in modifications in the following way:
1. Find rasistor the pin number 1 IC LM 494 leading to the 5 Volt output Volt rasistor replace with a value of 18-22 K, connect the 12 volt output.
2. Change pin numbers R 4 IC LM 494 is grounded by R 47 Ohm
3. Diode with the symbol -> <- that is belt dressing with 12 Volt output diode associated with a 5 volt output. Because this determines the size of the ampere.
4. Replace the coil on a ferrite rod with a wire ring that big email.
5. Lastly, the twin transistors are usually used instead of the C 2625 D4242
6. To his jamper swit on green wire with black cord.

After that modifikasi process is complete, we live test results. The way that most young people is by shorting the poles - the poles + on a 20 ampere fuse. if you can break means the modification work and ready for use. We live a good set of accessories in our power to look puppy Supply