automotive

Injection of audio frequency ripple on equipment input power conductors has a long history, going back to 1953 (MIL‑I‑6181B) in the United States military, and at least as far back as 1961 in commercial aviation (RTCA/DO‑108). Audio frequency injection has been accomplished by inserting the secondary windings of a coupling (isolation) transformer in series with the power conductor to the test sample. While various transformers had been used prior to the 1960s, one has become standard since 1963. That Model is the Solar Electronics Model 6220, designed in 1962 and accepted by the United States Air Force in 1963 as being superior to previously used injection transformers. [1]

An Open Letter to the NAS team working on the project:  Electronic Vehicle Controls and Unintended Acceleration (TRB-SASP-10-03)

The professional opinions of Dr. Antony Anderson BSc(Hons), PhD, CEng, FIEE/IET MIEEE, Dr. Brian Kirk BSc(Hons), PhD, CEng, MBCS, MACM, and EurIng Keith Armstrong BSc(Hons), CEng, FIET, SMIEEE, ACGI

There has been much to do about the sudden unexpected acceleration EMI connection. There is no shortage of opinions on this subject. We’ve heard from manufacturers and their EMI consultants as well as from many recognized industrial and academic EMI experts. Most manufacturers have been very supportive of each other but have been very careful not to utter direct EMI related statements as they would rather not be seen in the spotlight of any investigations aimed in their direction. I guess they think that the EMI gods have decided to target just one automobile manufacturer.