This 80's circuit uses a microcontroller programmed to generate various songs. The circuit can serve as the basis for a modern design, for example using Arduino. The old circuit included a small audio amplifier.
This circuit from an old Argentine publication from the 1970s uses a power transistor to obtain an...
The amplifier presented with the TDA2003 can provide a power of up to 10 W (rms) in a load of 2...
This power supply provides a12 V stabilized output. The transistor must be provided with a good...