We found this parking light circuit for automotive use in a Texas Instruments optoelectronics documentation. The Darlington transistor can be replaced by others in the TIP line.
The output voltage is adjusted by the trimpot. The power transistor mist be mounted on a heatsink. The 3.9...
Found in an old Popular Electronics this circuit causes a bicolor LED to alternate the colors of...
In a voltage follower the gain is unitary. Input impedance is too high and output impedance too low....