This circuit was found in an American documentation from 1969. The circuit is a multi-indicator with resistors typically 47 k for R1 and 100 k for the others.
The purpose of this circuit found in a 1994 documentation is to drive a 24 V motor. The circuit...
This circuit is suggested by Texas Instruments in his Optoelectronics Sourcebook. The transistors...
Found in General Electric's documentation from 1970, this circuit is indicated for the so-called...