Ainslie Circuit: DC Coupling and a True Ambient Reference

143 views · Published 28 August 2009 · 10:00 · Indexed 20 September 2026

Channel: Aaron Murakami · 2009 · Science & Technology

Watch on YouTube

All four channels of the Tektronix TDS3054C are shown set to DC coupling on the Rosemary Ainslie COP 17 heater circuit, and the RMS-to-DC-average spread at the load shunt is read off as 108.66 times. The second half covers temperature: an identical unpowered ceramic resistor sits inside the same enclosure as the load so that load temperature is compared against its own environment rather than room air. The 555 timer chip reads 25 C against a 19 C board, the power pot runs about 10 C above ambient, and the MOSFET stays at room temperature.

Chapters
0:00 Scope set to DC coupling
3:46 Ambient reference resistor explained
7:07 Timer chip and pot temperatures

https://emediapress.com
https://emediapress.com/energytimes

Rosemary Ainslie COP 17 circuit, 2009 bench footage. Recorded 2009-08-28.

More from this channel