This 5V power supply with a 1.5 to 3 A current was found in Maxim documentation from the 90s. The integrated circuit is the MAX741D.
This bridge circuit is designed for 8-ohm speakers delivering a few watts of power. The circuit is from...
The integrated circuit 4136 consists of operational amplifiers of type 741 in the same enclosure and...
This circuit allows selective relay actuation in the same line according to the applied voltage....