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Old 12th January 2009, 04:45 PM   #1
bigwill is offline bigwill  United Kingdom
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Default Gary Pimm self bias CCS but without LND150

I would like to build the circuit as featured here: http://www.pacifier.com/~gpimm/self_bias.htm

Unfortunately, the depletion mode mosfet LND150 is expensive and hard to get.

Are there any alternatives or a way to use normal low voltage JFETs in their position with a high voltage standoff transistor?
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Old 12th January 2009, 05:04 PM   #2
lineup is offline lineup  Sweden
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Supertex has got some good depletion mode mosfets
They should be able to find and buy
http://www.supertex.com/product_selection_tools.html

They comes in packages: TO-92, TO-220, SOT-89
Current IDSS Max is in the 100-200 mA range
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