This circuit reproduces the dial noise in a small speaker. The transistor can be a general-purpose type. We found it in an 80's Electronic Design.
This circuit is suggested by Texas Instruments' Linear Circuits Applications. It consists of an...
The module presents increases the intensity of the signals of amplifiers for automotive use,...
This circuit, which provides a power of up to 3.5 W, can be supplied with voltages from 9 to 14 V....