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The hack is the same for all as long as they use the same replaceable tips normally used to adapt to different computers.

I suspect they work along the same lines but I haven’t tried it out Igo makes some similar DC converters. Interestingly, the output voltage increases with load. I used two ten-turn pots I had to test this manuql, one of 4.

I’m happy to say the supply works as expected.

If it looks the same it may work, however you might want to know the amps as well, and if the tip is positive or negative. At the time I only needed one. The Impact of Pullup Resistors Any that use the same type adapter tip should operate the same way. It may surprise you that one of these power supplies can make an excellent bench power supply, with voltage adjustable from 0 – 24 volts at up to 6 amps.


The easiest way to control the power supply would be to use a couple pots configured as voltage dividers.

Kensington 33197 User Manual

David Payne Level 3 Expert Answers. When current exceeds the current limit setting, the current remains constant with the voltage changing as needed to maintain the current.

Thank you for using FixYa The physical connection is one thing. It’s worth a thousand words. Alun Cox Level 3 Expert Answers.

Additionally, the current can be limited, either for 33179 so a short doesn’t blow up your widget or to use as a constant current supply no matter what the load, the current will remain constant. Please assign your manual to a product: More Print this page Share this page. Dave lists some compatible models above. I used turn pots to allow fine adjustment. I didn’t mention that this supply also has a 12V DC input, so you could have a variable lab supply in your car.

Conveniently, 5v is also available on the connector. Your answer needs to include more details to help people. Constant current supplies are perfect for charging batteries or characterising LEDs. Ask a Question Usually answered in minutes! Add Your Answer Tips for a great answer: The 5-pin connector on the schematic is to show the conductor colors in the cable. They sell the Kensington, advertised as compatible with XPS when it’s not.


The values of the pots aren’t critical, since they are being used as voltage dividers.

The first enhancement I could make would be to put it in an enclosure with my TAP current monitor. First, I looked at output voltage vs kensingtton voltage. Tell us some more!

Kensington Manuals and User Guides, Adapter Manuals —

Kensington makes several model that are very easy to hack. Posted by Anonymous on Jan 24, You can’t post conmments that contain an email address. Voltage and current displayed, over a 0 – 24 volt range at up to 6 amps. The email address entered is already associated to an account. This shows that good performance can be achieved driving the supply with a DAC signal from a PIC even if it is open loop no feedback is made of the voltage output.

I’ve tried this on several models. Not awesome performance but not bad considering the cost. The output voltage equals 5 times the input voltage.

Not bad for six bucks and a couple pots!