Does anybody have info or links to sites on high power D.C./D.C. supplies.
I believe they are push/pull bridge type popular with auto stereo power amplifiers.
They use enameled 18,16 ga. wire and a torroid with a typical step-up, center tapped secondary, and a center tapped primary connected to the battery with two banks of FET's switched to ground at 30 or 40 khz in bi phase.
Any one familiar?
I know the technical details for winding a torroid are extensive to say the least but I was hoping there was familiar and had something basic from a working circuit available.
I have a rail of old FET's and want to wind a big transformer for something POWERFUL... if you know what I mean.
In the words of Tim Allen. POWER... Aarrrrg...
And sorry for the long note.
Thanks
Jim
From: "Brad O'Dell" <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] To: Multiple recipients of list CHIPDIR-L <[EMAIL PROTECTED]> Subject: HUF76121D3S MOSFET replacement Date: Mon, 15 Dec 2003 05:44:19 -0800
Hello everybody,
I was repairing a socket 370 motherboard and needed to replace a noticeably damaged Harris HUF76121D3S (part is branded 76121D, also Fairchild has this part). All I have easy access to is a RFP30N06LE. Will this be a suitable replacement besides the package style (TO-252AA versus TO-220AB)?
starter data:
both are N-channel enhancement mode logic level MOSFETs
replacement has higher voltage rating (Vdss and Vdgr 60V vs. 30V)
replacement has higher current rating (Id 30A vs. 20A)
replacement seems to be faster
however, drain-to-source ON resistance is more with replacement (Rds(ON) max. .047ohm vs. .030ohm). Would this significantly affect circuit operation? Also the HUF76121 Rds(on) was rated for the part maximum current of 20A, whereas the RFP30N06 Rds(on) was rated for that part's maximum current of 30A. How would I recalculate the RFP device's Rds(on) with the lower current of 20A that will be used?
Thanks, Brad
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