This circuit was found in documentation from the 1980s. Transistors are general-purpose types like the BC548 for NPN and the BC558 for PNP.
We found this circuit in a Texas Instruments optoelectronics manual. The audio modulator serves for...
This circuit is from European 90s documentation. The integrated circuit used is not very common...
This amplifier, which can supply 3 or 5 W of power, according to the values of some components given in...