This circuit is the factory version of the LM386 low-power amplifier. The sound quality is excellent, and the power can be supplied with voltages from 6 to 16 V.
This circuit generates an FM signal of 4.7 or 10.7 MHz for audio signals on analog TV or FM, with...
This simple test for general purpose NPN and PNP transistors was found in a 1974 publication....
This circuit from a Radio Electronics magazine from June 1969 already shows the use of the newly...