This sophisticated circuit for the 90s car was found in the 1993 edition of Radio Electronics Special Projects. It uses components that are still common today.
This is an improvement on the previous circuit with a preamplification stage. The circuit is from...
This bench circuit was found in the February 1998 issue of Electronics Now magazine. It can be...
This circuit was found in a 1967 Electronic Design. FETs are from the time, so modern equivalents can be...