Anyone used the TL783 as a CCS

Shoog · 25th September 2009, 08:24 PM

Just came across the TL783 and thought of it as a good candidate for a cathode CCS.
Anyone got any experience.

Shoog

jackinnj · 25th September 2009, 08:39 PM

If you need a good, high voltage CCS consider the Supertex depletion MOSFETs -- DN2540N5 -- they are about $1.60 over here -- take a look at part II of Walt Jung's article on current sources from 2007 it's on the AudioXpress website -- take particular note of the regulator using the LM317+DN2540.

Shoog · 25th September 2009, 08:47 PM

I hate ordering from abroad, postage on small orders is prohibitive.
I have had good experience with LM317's in cathode CCS duty. I have had slightly less good success with the IXY chips. This is becazuse they tend to be much more variable in how they bias up and I would imagine the DN254 to be similar.

Shoog

25th September 2009, 08:24 PM	#1
Shoog diyAudio Member Join Date: Aug 2002 Location: Eire	Anyone used the TL783 as a CCS Just came across the TL783 and thought of it as a good candidate for a cathode CCS. Anyone got any experience. Shoog

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25th September 2009, 08:39 PM	#2
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	If you need a good, high voltage CCS consider the Supertex depletion MOSFETs -- DN2540N5 -- they are about $1.60 over here -- take a look at part II of Walt Jung's article on current sources from 2007 it's on the AudioXpress website -- take particular note of the regulator using the LM317+DN2540.

25th September 2009, 08:47 PM	#3
Shoog diyAudio Member Join Date: Aug 2002 Location: Eire	I hate ordering from abroad, postage on small orders is prohibitive. I have had good experience with LM317's in cathode CCS duty. I have had slightly less good success with the IXY chips. This is becazuse they tend to be much more variable in how they bias up and I would imagine the DN254 to be similar. Shoog

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