This automotive circuit was obtained from an 80's schematic from the integrated circuit factory itself. The voltage regulator is still common, but the operational amplifier is of the time.
This circuit was found in the November 1966 issue of Electronics Now magazine. It uses an LDR as a...
In the figure we show how a 2-pole x 2-position switch or HH should be connected to reverse the...
We found this circuit in the March 1980 Radio Electronics magazine. The circuit used is the HA2400...