Symmetric Power Supply with HP 6632B

[balu]

Sometimes I need a symmetric power supply for test and development. I used two 6632B (System DC Power Supply) in series to get a symmetric power supply. Today you can buy units as a bench power supply for less money (e.g. in Germany for less than 300 Euro). I think to use two 6632B is a better than buying a real symmetric or dual power supply. Because they are expensive or will not deliver the voltage and current with the precision like the 6632B.

Advantage:

• High precision power supply
• Voltage range up to +/-20V
• Current range up to 5A per rail
• Full protection for over current or over voltage (remote shut down via external link)
• Programmable and control via RS-232 or GPIB
• Inexpensively and available

Disadvantage

• Two devices
• No synchronized voltage or current setup
• No Front-panel Binding Posts (optional)
• Need many connections to DUT (V+, V-, GND, Sense V+, Sense V-, Sense GND1, Sense GND2)

I have built a terminal HUB to reduce the number of connections between the power supply and the DUT.

[Neganur]

Haha, zwei Dumme, ein Gedanke. (great minds think alike/ two fools, one thought)

guess I'm being a cheap arse though with my plastic box and I also have to place the jumper manually. The sense wires are connected to the binding posts internally.