DC DC Positive Negative Voltage Boost Converter, ±5V Dual Output Power Supply Module with Efficiency for Embedded Systems, Robotics and Lab Testing

The device creates plus and minus 5 VDC sources which can take a decent imbalance in currents and still be regulated. The device has been in my project and working with no problems for over 3 months. I had to put some good 4 pole filters on each output to get the 402 kHz ripple down enough so that my sensitive broadband amplifiers would not be affected. Shipping times and packing were good. Thanks

Been using ATX power supplies to replace AT power supplies in legacy computers at work. Most now don't make the -5v and that's been fine just using the cable adapters until I needed to replace the PS on a computer running a frame grabber board in the PCI slot requiring -5v. Without the -5v the board wouldn't work. I bought this and used the 12v from the unused 4 pin connector coming out of the ATX PS to feed this. The instructions it can use anywhere from 3v to 18v for power and output would be slightly higher or lower depending on input voltage. The 12v made 5.6v output. Instructions said needed to use both the positive and negative output to function properly, so I just wired the output into one of the positive and negative 5v circuits of the adapter that plugs into the MB. Find a pinout of the 2 PS connectors and its pretty straight forward. All of the ATX PS's I've seen don't even have a -5v wire going into the connector but the adapter does so it's pretty easy to identify the -5v wire. There might be a simpler way to connect this, but I wanted to be able to just plug and unplug the PS later if I needed to replace so this way, I can leave the adapter in the computer and just replace the PS without any additional wiring.

It delivered 5.05 + VDC okay. The negative output was -5.65 VDC. Too far off to be used in Op Amp circuits.

Used this to get negative voltage from an arduino and it worked well.

Funciona bien, tiene mucho ruido a la salida, sin embargo en lo que lo usaré no importa mucho ya que agregue reguladores lineales para estabilizar la salida y disminuir el ruido. Consume baja potencia. No recomendable para circuitos de instrumentacion por el ruido a menos que agregues componentes a la salida que lo atenuen. Para practicas de escuela esta muy bien.