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Old 1st Jun 2016, 10:36 am   #5
dave cox
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Join Date: Jan 2009
Location: Bristol, UK.
Posts: 1,692
Default Re: Roband Varex 60-5 power supply

These can be programmed for voltage with a single resistor if you're worried (as you should be!) about the voltage jumping about as you twiddle the pot. For sensitive circuits I would also avoid using the ON switch on the front panel as well, as you may get some overshoot ... The other thing I try and avoid doing is using the set "I" option as this shorts the O/P, if the current pot is noisy you will very likely blow the pass transistors !

What I do like about these units is the absence of a fan, thanks to the thyristor bridge, but this also has the downside of making the unit rather useless in current mode !

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