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Since87 · 12-09-2003, 05:58 PM

TEC manufacturers recommend keeping the ripple under 10% for fullwave rectified 60Hz, so it's a lot of filtering. The caps are one of the major expenses for doing this.

The variac I have is 5A. Probably enough for a 12V, 30A supply, as long as the efficiency of the linear is reasonable. Definitely enough for a 226 Watt TEC supply.

Edit: Don't know anything about replacing the brush.

12-09-2003, 05:58 PM	#4
Since87 Pro/Guru - Uber Mod Join Date: Sep 2002 Location: Indiana Posts: 834	TEC manufacturers recommend keeping the ripple under 10% for fullwave rectified 60Hz, so it's a lot of filtering. The caps are one of the major expenses for doing this. The variac I have is 5A. Probably enough for a 12V, 30A supply, as long as the efficiency of the linear is reasonable. Definitely enough for a 226 Watt TEC supply. Edit: Don't know anything about replacing the brush.