We found this TTL circuit in a Texas Instruments optoelectronics manual. The power is 5 V and the LEDs are common.
Found in an American publication from 1969, this circuit can be adapted to be used as a shield....
Servo motors operate from the changes in the pulse width in a range between 1 and 2 ms. The...
This simple transistor tester circuit was found in the February 1968 issue of Radio Electronics magazine....