Found in a documentation from the 70s, this circuit causes the courtesy light of the car to remain on for an additional time after the doors are closed. The time depends on C1.
We found these circuits in a Popular Electronics from the 90s. The circuit has a simple low power...
This LED diode test is suggested by the Texas Instruments optoelectronics manual. The transformer current...
This RF monitor or field strength meter can use instruments from 100 uA to 1 mA full scale. The...