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Re: CCS heatsinks [message #30511 is a reply to message #30508]

Sun, 13 February 2005 14:15

Damir
Messages: 1005
Registered: May 2009

Illuminati (2nd Degree)

Easy, "top" mosfet (connected to the B+) drops about all the voltage from B+ to the Ua (anode voltage). It`s about 100V difference, and with 15 mA - P=1,5W, even small heatsink is "good enough" - IMO.
Interesting, in BC55B/MJE350 CCS, the transistor close to the anode load, or "lower" one (MJE350) needs cooling - opposite then DN2540 cascode CCS.

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[Message index]

		CCS built By: colinhester on Sat, 12 February 2005 21:27
		Re: CCS built By: Wayne Parham on Sun, 13 February 2005 00:07
		Re: CCS built By: colinhester on Sun, 13 February 2005 00:17
		Re: CCS built By: Wayne Parham on Sun, 13 February 2005 00:36
		Re: CCS built By: Damir on Sun, 13 February 2005 09:10
		Re: CCS built By: colinhester on Sun, 13 February 2005 11:58
		Re: CCS built By: Damir on Sun, 13 February 2005 14:09
		Re: CCS built By: Manualblock on Sun, 13 February 2005 15:48
		CCS heatsinks By: PakProtector on Sun, 13 February 2005 13:08
		Re: CCS heatsinks By: colinhester on Sun, 13 February 2005 13:45
		Re: CCS heatsinks By: PakProtector on Sun, 13 February 2005 14:13
		Re: CCS heatsinks By: Manualblock on Sun, 13 February 2005 15:47
		Re: CCS heatsinks By: Damir on Sun, 13 February 2005 14:15

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