Found in American documentation from the 90s, this circuit uses TTL technology and is therefore compatible with microcontroller drives. The circuit must be powered by a 5V power source.
Found in a Popular Electronics - January/February 1969 this circuit was intended to increase the...
We found this circuit in an old documentation. It has a thermally compensated voltage reference. The...
This good quality stereo amplifier was found in a Japanese publication from the 1960s. The circuit...